Hydrogen leakage detection alarm device and method, computer device

Abstract

The application provides a hydrogen leakage detection alarm device and method and a computer device, and belongs to the field of hydrogen leakage detection. The hydrogen leakage detection alarm device comprises a hydrogen-sensitive color-changing adhesive tape, which is attached to a hydrogen pipeline connection position, is used for sensing hydrogen leaked from the hydrogen pipeline connection position, and changes color in response to the concentration of the leaked hydrogen to display a color signal; a monitoring sensor, which is used for monitoring the hydrogen-sensitive color-changing adhesive tape, collecting the color signal of the hydrogen-sensitive color-changing adhesive tape, and converting the collected color signal into an electrical signal; a control module, which is used for judging whether hydrogen leakage occurs according to the electrical signal, and calculating the risk level of hydrogen leakage when hydrogen leakage occurs; and an alarm module, which is used for executing an alarm action according to the risk level of hydrogen leakage.

Description

Technical Field

[0001] This invention relates to the field of hydrogen leak detection technology, specifically to a hydrogen leak detection alarm device, a hydrogen leak detection alarm method, a computer device, and a computer-readable storage medium. Background Technology

[0002] Hydrogen energy has many advantages, such as wide availability, high energy density, zero emissions, and wide range of applications. It is of great significance in ensuring energy supply security, improving air quality, and promoting energy structure upgrading.

[0003] Hydrogen refueling stations have numerous equipment and pipeline connection points. Preliminary statistics indicate over 100 connection points on the compressor skid, over 20 inside the hydrogen dispenser, and over 10 inside the unloading column. Typically, only one hydrogen leak detection alarm is installed inside the dispenser and unloading column, and one to two are installed inside the compressor skid, making effective detection and location of hydrogen leaks difficult.

[0004] Meanwhile, hydrogen leak detection alarms can only detect the presence or absence of a leak, but cannot provide a quantitative analysis of the amount of hydrogen leaked or the risks caused by the leak, which restricts the large-scale promotion and application of this technology. Summary of the Invention

[0005] To address the aforementioned technical deficiencies, this invention provides a hydrogen leak detection and alarm device and method, along with a computer device. The hydrogen leak detection and alarm device utilizes hydrogen-sensitive color-changing tape for hydrogen leak monitoring, employing a point-to-point detection and alarm mechanism. This solves the problem of false alarms and missed alarms caused by interference from environmental factors and photography during video recognition. By calculating the risk level of the hydrogen leak, quantitative analysis of the leak is achieved. The designed monitoring sensors are compatible with all pipelines and equipment in gas stations, enabling precise inspection at each location. This solves the problem of hydrogen leaks being difficult to detect away from personnel inspection routes, representing a significant advancement in hydrogen-sensitive color-changing technology from reliance on personnel inspection to automatic alarm functionality.

[0006] The first aspect of this invention provides a hydrogen leak detection and alarm device, comprising:

[0007] Hydrogen-sensitive color-changing tape is applied to the connection of hydrogen pipelines to detect hydrogen leaks at the connection points. It changes color according to the concentration of leaked hydrogen to display a color signal.

[0008] A monitoring sensor is used to monitor the hydrogen-sensitive color-changing tape, collect the color signal of the hydrogen-sensitive color-changing tape, and convert the collected color signal into an electrical signal.

[0009] The control module is used to determine whether a hydrogen leak has occurred based on the electrical signal from the monitoring sensor, and to calculate the risk level of the hydrogen leak when a hydrogen leak is determined to have occurred.

[0010] An alarm module is used to execute an alarm action based on the risk level of the hydrogen leak.

[0011] In this embodiment of the invention, the color signal of the hydrogen-sensitive color-changing tape is described using the Lab color space.

[0012] In this embodiment of the invention, the monitoring sensor includes a light source assembly, a photodetector, and a data repeater. The light source assembly is used to illuminate the hydrogen-sensitive color-changing tape. The photodetector is used to collect the color signal of the hydrogen-sensitive color-changing tape and convert the collected color signal into an electrical signal. The data repeater is used to receive the electrical signal sent from the photodetector and send the electrical signal to the control module.

[0013] In this embodiment of the invention, the control module is specifically used to convert electrical signals into Lab detection values ​​described by the Lab color space, compare the Lab detection values ​​with Lab standard values, and determine whether hydrogen leakage has occurred based on the comparison results.

[0014] In this embodiment of the invention, comparing the Lab detection value with the Lab standard value and determining whether a hydrogen leak has occurred based on the comparison result includes:

[0015] This method is used to determine that a hydrogen leak has occurred when the comparison results show that the L value of the Lab detection value is less than the L value of the Lab standard value, the a value of the Lab detection value is less than the a value of the Lab standard value, the b value of the Lab detection value is less than the b value of the Lab standard value, and the difference between the L value of the Lab detection value and the L value of the Lab standard value is less than a preset value.

[0016] In this embodiment of the invention, calculating the risk level of a hydrogen leak when it is determined to have occurred includes:

[0017] The color change rate of the hydrogen-sensitive color-changing tape is calculated based on the Lab detection value of the color signal of the hydrogen-sensitive color-changing tape.

[0018] The risk level of hydrogen leakage is calculated based on the color change rate of the color signal from the hydrogen-sensitive color-changing tape.

[0019] In this embodiment of the invention, calculating the color change rate of the hydrogen-sensitive color-changing tape based on the Lab detection value of the color signal of the hydrogen-sensitive color-changing tape includes:

[0020] Calculate the color change rate of the L value in the Lab detection value;

[0021] Calculate the color change rate of the α value in the Lab detection values; and

[0022] Calculate the color change rate of the b-value in the Lab detection values.

[0023] In this embodiment of the invention, calculating the risk level of hydrogen leakage based on the color change rate of the hydrogen-sensitive color-changing tape includes:

[0024] The first risk coefficient is calculated based on the color change rate of the 'a' value in the Lab detection value and the first correction coefficient.

[0025] The second risk coefficient is calculated based on the color change rate of the b-value in the Lab detection value and the second correction coefficient.

[0026] The color change rate of the L value in the Lab detection value is used as the third risk factor;

[0027] The final risk coefficient is obtained based on the first risk coefficient, the second risk coefficient, and the third risk coefficient.

[0028] The risk level of hydrogen leakage is determined based on the final risk coefficient.

[0029] A second aspect of the present invention provides a method for detecting and alarming hydrogen leaks, the method comprising:

[0030] Hydrogen-sensitive color-changing tape is affixed to the connection of the hydrogen pipeline. The hydrogen-sensitive color-changing tape is used to sense the hydrogen leaking at the connection of the hydrogen pipeline and responds with a color change according to the concentration of the leaked hydrogen to display a color signal.

[0031] Real-time monitoring of hydrogen-sensitive color-changing tape, collection of color signals from the hydrogen-sensitive color-changing tape, and conversion of the collected color signals into electrical signals;

[0032] Determine whether a hydrogen leak has occurred based on electrical signals;

[0033] When a hydrogen leak is determined to have occurred, the risk level of the hydrogen leak is calculated;

[0034] An alarm will be triggered based on the risk level of the hydrogen leak.

[0035] In an embodiment of the present invention,

[0036] The method of determining whether a hydrogen leak has occurred based on electrical signals includes:

[0037] The electrical signal corresponding to the color signal is converted into a Lab detection value described in the Lab color space. The Lab detection value is compared with the Lab standard value, and the comparison result is used to determine whether a hydrogen leak has occurred. The color signal is described using the Lab color space.

[0038] In this embodiment of the invention, comparing the Lab detection value with the Lab standard value and determining whether a hydrogen leak has occurred based on the comparison result includes:

[0039] A hydrogen leak is determined to have occurred when the comparison results show that the L value of the Lab detection value is less than the L value of the Lab standard value, the a value of the Lab detection value is less than the a value of the Lab standard value, the b value of the Lab detection value is less than the b value of the Lab standard value, and the difference between the L value of the Lab detection value and the L value of the Lab standard value is less than a preset value.

[0040] In this embodiment of the invention, calculating the risk level of a hydrogen leak when it is determined to have occurred includes:

[0041] The color change rate of the hydrogen-sensitive color-changing tape is calculated based on the Lab detection value of the color signal of the hydrogen-sensitive color-changing tape.

[0042] The risk level of hydrogen leakage is calculated based on the color change rate of the color signal from the hydrogen-sensitive color-changing tape.

[0043] In this embodiment of the invention, calculating the color change rate of the hydrogen-sensitive color-changing tape based on the Lab detection value of the color signal of the hydrogen-sensitive color-changing tape includes:

[0044] Calculate the color change rate of the L value in the Lab detection value;

[0045] Calculate the color change rate of the α value in the Lab detection values; and

[0046] Calculate the color change rate of the b-value in the Lab detection values.

[0047] In this embodiment of the invention, calculating the risk level of hydrogen leakage based on the color change rate of the hydrogen-sensitive color-changing tape includes:

[0048] The first risk coefficient is calculated based on the color change rate of the 'a' value in the Lab detection value and the first correction coefficient.

[0049] The second risk coefficient is calculated based on the color change rate of the b-value in the Lab detection value and the second correction coefficient.

[0050] The color change rate of the L value in the Lab detection value is used as the third risk factor;

[0051] The final risk coefficient is obtained based on the first risk coefficient, the second risk coefficient, and the third risk coefficient.

[0052] The risk level of hydrogen leakage is determined based on the final risk coefficient.

[0053] A third aspect of the present invention provides a computer device, comprising:

[0054] Memory;

[0055] Processor; and

[0056] Computer programs;

[0057] The computer program is stored in a memory and configured to be executed by a processor to implement the hydrogen leak detection and alarm method described above.

[0058] A fourth aspect of the present invention provides a computer-readable storage medium having a computer program stored thereon, the computer program being executed by a processor to implement the hydrogen leak detection and alarm method described above.

[0059] Through the above technical solution, this invention uses hydrogen-sensitive color-changing tape to monitor hydrogen leaks, adopting a point-to-point hydrogen leak detection and alarm system. This solves the problems of false alarms and missed alarms caused by video recognition being easily interfered with by external factors such as environment and photography. By calculating the risk level of hydrogen leaks, quantitative analysis of hydrogen leaks is achieved. Through the designed monitoring sensor, it is adapted to be installed on all pipelines and equipment in the gas station, enabling accurate inspection at each point. This solves the problem of hydrogen leaks being difficult to detect in areas away from personnel inspection channels, and represents a significant advancement in hydrogen-sensitive color-changing technology from relying on personnel inspections to automatic alarms.

[0060] Other features and advantages of the technical solution of the present invention will be described in detail in the following detailed embodiments section. Attached Figure Description

[0061] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings:

[0062] Figure 1 This is a structural block diagram of the hydrogen leak detection and alarm device provided in Embodiment 1 of the present invention;

[0063] Figure 2 This is a schematic diagram of the monitoring sensor provided in Embodiment 1 of the present invention;

[0064] Figure 3 This is a schematic diagram of the structure of the hydrogen leak detection and alarm device installed on the hydrogen refueling station direct pipeline provided in Embodiment 1 of the present invention;

[0065] Figure 4 This is a schematic diagram of the structure of the hydrogen leak detection and alarm device installed on the three-way pipeline of the hydrogen refueling station provided in Embodiment 1 of the present invention;

[0066] Figure 5 This is a schematic diagram of the structure of the hydrogen leak detection and alarm device installed on the 90° pipeline of the hydrogen refueling station provided in Embodiment 1 of the present invention;

[0067] Figure 6 This is a schematic diagram of the structure of the hydrogen refueling station equipment surface hydrogen leakage detection and alarm device provided in Embodiment 1 of the present invention;

[0068] Figure 7 This is a flowchart of the hydrogen leak detection and alarm method provided in Embodiment 2 of the present invention.

[0069] Explanation of reference numerals in the attached figures

[0070] 100-Hydrogen pipeline, 110-Connector on hydrogen pipeline, 200-Hydrogen-sensitive color-changing tape, 300-Monitoring sensor, 310-Light source assembly, 320-Photoelectric receiver, 340-Data repeater, 400-Hydrogen-containing equipment. Detailed Implementation

[0071] To make the technical solutions and advantages of the embodiments of the present invention clearer, the exemplary embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of the present invention can be combined with each other.

[0072] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "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 invention 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 invention.

[0073] Furthermore, 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0074] In this invention, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0075] In developing this invention, the inventors discovered numerous connection points for equipment and pipelines within hydrogen refueling stations. Preliminary statistics indicate over 100 connection points on the compressor skid, over 20 inside the hydrogen dispenser, and over 10 inside the unloading column. Typically, only one hydrogen leak detection alarm is installed inside the hydrogen dispenser and unloading column, and one to two are installed inside the compressor skid, making effective detection and location of hydrogen leaks difficult. Furthermore, the hydrogen leak detection alarms can only detect the presence or absence of a leak; they cannot provide a quantitative analysis of the amount of hydrogen leaked or the risks posed by the leak, thus hindering the large-scale application of this technology.

[0076] To address the aforementioned problems, this invention provides a hydrogen leak detection and alarm device, comprising: a hydrogen-sensitive color-changing tape, made of a hydrogen-sensitive leak detection material, applied to the connection of a hydrogen pipeline, which changes color according to the concentration of leaked hydrogen, displaying a color signal; a monitoring sensor, used to monitor the hydrogen-sensitive color-changing tape, collect the color signal of the tape, and convert the collected color signal into an electrical signal; a control module, used to determine whether a hydrogen leak has occurred based on the electrical signal, and calculate the risk level of the hydrogen leak when it occurs; and an alarm module, used to execute an alarm action based on the risk level of the hydrogen leak. This invention collects the color signal from the hydrogen-sensitive color-changing tape using a monitoring sensor and converts it into an electrical signal. The control module determines whether a hydrogen leak has occurred at the monitoring point based on the received electrical signal and calculates the risk level of the hydrogen leak, thereby achieving quantitative analysis of the hydrogen leak and ensuring the safe operation of hydrogen refueling stations. Through the above technical solution, this invention uses hydrogen-sensitive color-changing tape to monitor hydrogen leaks, adopting a point-to-point hydrogen leak detection and alarm system. This solves the problems of false alarms and missed alarms caused by video recognition being easily interfered with by external factors such as environment and photography. By calculating the risk level of hydrogen leaks, quantitative analysis of hydrogen leaks is achieved. Through the designed monitoring sensor, it is adapted to be installed on all pipelines and equipment in the gas station, enabling accurate inspection at each point. This solves the problem of hydrogen leaks being difficult to detect in areas away from personnel inspection channels, and represents a significant advancement in hydrogen-sensitive color-changing technology from relying on personnel inspections to automatic alarms.

[0077] Example 1

[0078] Figure 1 This is a structural block diagram of the hydrogen leak detection and alarm device provided in Embodiment 1 of the present invention. Figure 1 As shown, the hydrogen leak detection and alarm device provided in this embodiment includes:

[0079] Hydrogen-sensitive color-changing tape 200 is made of hydrogen-sensitive leak detection material and is applied to the connection of hydrogen pipeline 100. It changes color according to the concentration of hydrogen leak and displays a color signal.

[0080] The monitoring sensor 300 is used to monitor the hydrogen-sensitive color-changing tape 200, collect the color signal of the hydrogen-sensitive color-changing tape 200, and convert the collected color signal into an electrical signal.

[0081] The control module is used to determine whether a hydrogen leak has occurred based on the electrical signal, and to calculate the risk level of the hydrogen leak when a hydrogen leak occurs.

[0082] An alarm module is used to execute an alarm action based on the risk level of the hydrogen leak.

[0083] Specifically, the hydrogen-sensitive color-changing adhesive tape 200 is prepared using hydrogen-sensitive leak detection materials, giving it a color-changing response characteristic to hydrogen leaks. As the concentration of leaked hydrogen increases, the tape changes from a light color to a dark blue. Furthermore, the color signal of the hydrogen-sensitive color-changing adhesive tape 200 is described using the Lab color space. Specifically, before the color change, the L value in the Lab color space is 60~80, the a value is -10~10, and the b value is -15~15; after the color change, the L value in the Lab color space is 30~60, the a value is -20~0, and the b value is -30~0.

[0084] When the monitoring sensor 300 collects the color signal of the hydrogen-sensitive color-changing tape 200, the monitoring sensor 300 is used to convert the collected color signal of the hydrogen-sensitive color-changing tape 200 into an electrical signal in real time. The control module is also used to convert the received electrical signal into a Lab detection value of the color signal described by the Lab color space.

[0085] In this embodiment, the control module is used to convert electrical signals into Lab detection values ​​described by the Lab color space, compare the Lab detection values ​​with Lab standard values, and determine whether hydrogen leakage has occurred based on the comparison results.

[0086] Further, the control module is configured to determine that hydrogen leakage has occurred when the comparison result shows that the L value of the Lab detection value is less than the L value of the Lab standard value, the a value of the Lab detection value is less than the a value of the Lab standard value, the b value of the Lab detection value is less than the b value of the Lab standard value, and the difference between the L value of the Lab detection value and the L value of the Lab standard value is less than a preset value. Specifically, the Lab detection value at a certain moment is obtained, and the Lab detection value at a certain moment is compared with the Lab standard value to obtain a comparison result. When the comparison result is that the L value of the Lab detection value at a certain moment is less than the L value of the Lab standard value, the a value of the Lab detection value at a certain moment is less than the a value of the Lab standard value, the b value of the Lab detection value at a certain moment is less than the b value of the Lab standard value, and the difference between the L value of the Lab detection value at a certain moment and the L value of the Lab standard value is less than the preset value, it is determined that hydrogen leakage has occurred.

[0087] That is:

[0088] When L t < L, a t < a, b t < b and L - L t > 1, it is determined that hydrogen leakage has occurred.

[0089] Among them, L t is the L value of the Lab detection value at time t, a t is the a value of the Lab detection value at time t, b t [[ID=

[23] ]is the b value of the Lab detection value at time t, L is the L value of the Lab standard value, a is the a value of the Lab standard value, b is the b value of the Lab standard value, and the preset value is 1.

[0090] To avoid false alarms caused by environmental changes, when calculating the color change, it should satisfy that the change in the L value > 1, that is, L - L t > 1.

[0091] When it is detected that hydrogen leakage has occurred, the control module is configured to calculate the risk level of hydrogen leakage and issue an alarm of the corresponding level according to the risk level to perform corresponding fire protection actions.

[0092] Specifically, the control module is configured to calculate the color change rate of the color signal of the hydrogen-sensitive color-changing tape 二百 with reference to the Lab detection value of the color signal of the hydrogen-sensitive color-changing tape 二百;

[0093] The control module is configured to calculate the color change rate of the color signal of the hydrogen-sensitive color-changing tape 二百 with reference to the Lab detection value of the color signal of the hydrogen-sensitive color-changing tape 二百, including:

[0094] Calculating the color change rate of the L value in the Lab detection value;

[0095] Calculating the color change rate of the a value in the Lab detection value; and

[0096] Calculate the color change rate of the b-value in the Lab detection values.

[0097] Through L ， =(LL t The color change rate of the L value in the Lab detection value is calculated by ) / t.

[0098] via a ， =(aa t The color change rate of the 'a' value in the Lab detection value is obtained by calculating ) / t.

[0099] via b ， =(bb t The color change rate of the b value in the Lab detection value is calculated by ) / t.

[0100] Where L ， a represents the color change rate of the L value in the Lab detection value. ， Let a be the color change rate of the Lab detection value, and b be the value of color change rate. ， The color change rate is represented by the b-value in the Lab detection values.

[0101] The risk level of hydrogen leakage is calculated based on the color change rate of the color signal of the hydrogen-sensitive color-changing tape 200.

[0102] In this embodiment, the control module is used to calculate the risk level of hydrogen leakage based on the color change rate of the color signal of the hydrogen-sensitive color-changing tape 200, including:

[0103] The first risk coefficient is calculated based on the color change rate of the 'a' value in the Lab detection value and the first correction coefficient.

[0104] The second risk coefficient is calculated based on the color change rate of the b-value in the Lab detection value and the second correction coefficient.

[0105] The color change rate of the L value in the Lab detection value is used as the third risk factor;

[0106] Specifically, the first risk factor is m×a ， The second risk coefficient is n×b ’ And the third risk coefficient is L ， m is the first correction factor, and n is the second correction factor.

[0107] The final risk coefficient is obtained based on the first, second, and third risk coefficients; specifically, the maximum value among the first, second, and third risk coefficients is selected as the final risk coefficient, i.e., the final risk coefficient R. L =max[L ’ ,m×a ’ ,n×b’ ], where R L This represents the final risk coefficient.

[0108] Furthermore, the present invention provides a risk level classification table for hydrogen leakage as follows:

[0109]

[0110] The risk level of hydrogen leakage is determined based on the final risk coefficient.

[0111] After the control module obtains the risk level of the hydrogen leak, it sends an alarm command corresponding to that risk level to the alarm module. The alarm module then executes alarm actions based on the alarm command, and these actions are tiered. The corresponding level of fire-fighting action is then executed based on the alarm level.

[0112] Figure 2 This is a schematic diagram of the monitoring sensor 300 provided in Embodiment 1 of the present invention, as shown below. Figure 2 As shown, in this embodiment, the monitoring sensor 300 includes a light source assembly 310, a photodetector 320, and a data repeater 340. The light source assembly 310 is used to illuminate the hydrogen-sensitive color-changing tape 200. The photodetector 320 is used to collect the color signal of the hydrogen-sensitive color-changing tape 200 and convert the collected color signal into an electrical signal. The data repeater 340 is used to receive the electrical signal sent from the photodetector 320 and send the electrical signal to the control module.

[0113] Specifically, the hydrogen-sensitive color-changing tape 200 is affixed to the connection of the hydrogen pipeline 100 according to the actual situation of the hydrogen pipeline 100, and the monitoring sensor 300 is mounted on the hydrogen-sensitive color-changing tape 200 to monitor the color signal of the hydrogen-sensitive color-changing tape 200.

[0114] Figure 3 This is a schematic diagram of the structure of the hydrogen leak detection and alarm device installed on the hydrogen refueling station direct pipeline provided in Embodiment 1 of the present invention, as shown below. Figure 3 As shown, the hydrogen-sensitive color-changing tape 200 is affixed to the joint on the hydrogen pipeline 100, and the monitoring sensor 300 completely covers the hydrogen-sensitive color-changing tape 200.

[0115] Figure 4 This is a schematic diagram of the structure of the hydrogen leak detection and alarm device installed on the three-way pipeline of the hydrogen refueling station provided in Embodiment 1 of the present invention, as shown below. Figure 4As shown, hydrogen-sensitive color-changing tape 200 is applied to the connection of the T-shaped pipe. Hydrogen-sensitive color-changing tape 200 is applied to the horizontal section of the T-shaped pipe, and vertical tape is also applied to the vertical section. Correspondingly, a monitoring sensor 300 is mounted on both the horizontal and vertical sections of the T-shaped pipe, ensuring complete coverage of the hydrogen-sensitive color-changing tape 200 by the monitoring sensor 300.

[0116] Figure 5 This is a schematic diagram of the structure of the hydrogen leak detection and alarm device installed on the 90° pipeline of the hydrogen refueling station according to Embodiment 1 of the present invention, as shown below. Figure 5 As shown, hydrogen-sensitive color-changing tape 200 is applied to the connection of the tee pipe. Hydrogen-sensitive color-changing tape 200 is applied to the horizontal section of the 90° pipe, and vertical tape is also applied to the vertical section of the 90° pipe. Correspondingly, monitoring sensors 300 are mounted on both the horizontal and vertical sections of the 90° pipe, ensuring complete coverage of the hydrogen-sensitive color-changing tape 200 by the monitoring sensors 300.

[0117] Figure 6 This is a schematic diagram of the structure of the hydrogen refueling station equipment surface equipped with a hydrogen leak detection and alarm device provided in Embodiment 1 of the present invention, as shown in the figure. Figure 6 As shown, the hydrogen-sensitive color-changing tape 200 is affixed to the hydrogen-contaminated device 400, and the monitoring sensor 300 is mounted on the surface of the hydrogen-contaminated device 400, completely covering the hydrogen-sensitive color-changing tape 200.

[0118] Example 2

[0119] Figure 7 This is a flowchart of the hydrogen leak detection and alarm method provided in Embodiment 2 of the present invention. Figure 2 As shown, the hydrogen leak detection and alarm method provided in this embodiment includes the following steps:

[0120] S1. Apply hydrogen-sensitive color-changing tape 200 to the connection of the hydrogen pipeline. The hydrogen-sensitive color-changing tape 200 is used to sense the hydrogen leaking at the connection of the hydrogen pipeline and respond with a color change according to the concentration of the leaked hydrogen to display a color signal.

[0121] S2. Monitor the hydrogen-sensitive color-changing tape 200 in real time, collect the color signal of the hydrogen-sensitive color-changing tape 200, and convert the color signal into an electrical signal;

[0122] S3. Determine whether a hydrogen leak has occurred based on electrical signals, and calculate the risk level of the hydrogen leak if one has occurred.

[0123] S4. Execute alarm actions based on the risk level of hydrogen leakage.

[0124] In step S2, the method further includes: describing the color signal of the hydrogen-sensitive color-changing tape 200 using the Lab color space;

[0125] The method of determining whether a hydrogen leak has occurred based on electrical signals includes:

[0126] The electrical signal is converted into a Lab detection value described by the Lab color space. The Lab detection value is compared with the Lab standard value, and the comparison result is used to determine whether a hydrogen leak has occurred.

[0127] In step S3, the method further includes:

[0128] A hydrogen leak is determined to have occurred when the comparison results show that the L value of the Lab detection value is less than the L value of the Lab standard value, the a value of the Lab detection value is less than the a value of the Lab standard value, the b value of the Lab detection value is less than the b value of the Lab standard value, and the difference between the L value of the Lab detection value and the L value of the Lab standard value is less than a preset value.

[0129] In step S3, calculating the risk level of hydrogen leakage includes:

[0130] The color change rate of the color signal of the hydrogen-sensitive color-changing tape 200 is calculated based on the Lab detection value of the color signal of the hydrogen-sensitive color-changing tape 200.

[0131] The risk level of hydrogen leakage is calculated based on the color change rate of the color signal of the hydrogen-sensitive color-changing tape 200.

[0132] In this embodiment of the invention, the step of calculating the color change rate of the hydrogen-sensitive color-changing tape 200 based on the Lab detection value of the color signal of the hydrogen-sensitive color-changing tape 200 includes:

[0133] Calculate the color change rate of the L value in the Lab detection value;

[0134] Calculate the color change rate of the α value in the Lab detection values; and

[0135] Calculate the color change rate of the b-value in the Lab detection values.

[0136] In step S3, calculating the risk level of hydrogen leakage based on the color change rate of the color signal of the hydrogen-sensitive color-changing tape 200 includes:

[0137] The first risk coefficient is calculated based on the color change rate of the 'a' value in the Lab detection value and the first correction coefficient.

[0138] The second risk coefficient is calculated based on the color change rate of the b-value in the Lab detection value and the second correction coefficient.

[0139] The color change rate of the L value in the Lab detection value is used as the third risk factor;

[0140] The final risk coefficient is obtained based on the first risk coefficient, the second risk coefficient, and the third risk coefficient.

[0141] The risk level of hydrogen leakage is determined based on the final risk coefficient.

[0142] Hydrogen leak detection methods include:

[0143] (1) Install hydrogen-sensitive color-changing tape 200 at the connection points of equipment and pipelines in the hydrogen refueling station;

[0144] (2) Install the monitoring sensor 300 on the hydrogen-sensitive color-changing tape 200;

[0145] (3) The color information of the hydrogen-sensitive color-changing tape 200 is collected in real time and converted into an electrical signal by the monitoring sensor 300 for transmission;

[0146] (4) Compare the electrical signal of the color change of the hydrogen-sensitive color-changing tape 200 with the standard color value. If there is a difference, perform operation (5). If there is no difference, continue to perform operation (3) (4).

[0147] (5) Output hydrogen leak alarm signal and calculate the risk level of hydrogen leak;

[0148] (6) Output the risk level of hydrogen leakage and take interlocking response actions according to the risk level.

[0149] The hydrogen leak detection and alarm method of the present invention is applied to a hydrogen leak detection and alarm device, the hydrogen leak detection and alarm device comprising:

[0150] Figure 1 This is a structural block diagram of the hydrogen leak detection and alarm device provided in Embodiment 1 of the present invention. Figure 1 As shown, the hydrogen leak detection and alarm device provided in this embodiment includes:

[0151] Hydrogen-sensitive color-changing tape 200 is made of hydrogen-sensitive leak detection material and is applied to the connection of hydrogen pipeline 100. It changes color according to the concentration of hydrogen leak and displays a color signal.

[0152] The monitoring sensor 300 is used to monitor the hydrogen-sensitive color-changing tape 200, collect the color signal of the hydrogen-sensitive color-changing tape 200, and convert the collected color signal into an electrical signal.

[0153] The control module is used to determine whether a hydrogen leak has occurred based on the electrical signal, and to calculate the risk level of the hydrogen leak when a hydrogen leak occurs.

[0154] An alarm module is used to execute an alarm action based on the risk level of the hydrogen leak.

[0155] Specifically, the hydrogen-sensitive color-changing glue is prepared with a hydrogen-sensitive leakage detection material to make it have the characteristic of color-changing response to hydrogen leakage. As the concentration of the leaked hydrogen increases, the hydrogen-sensitive color-changing tape 200 changes from light color to dark blue. Further, the color signal of the hydrogen-sensitive color-changing tape 200 is described in the Lab color space. Among them, when described in the Lab color space, the L value in the Lab value before color change is 60 - 80, the a value is -10 - 10, and the b value is -15 - 15; the L value in the Lab value after color change is 30 - 60, the a value is -20 - 0, and the b value is -30 - 0.

[0156] When the monitoring sensor 300 collects the color signal of the hydrogen-sensitive color-changing tape 200, the monitoring sensor 300 is used to convert the collected color signal of the hydrogen-sensitive color-changing tape 200 into an electrical signal in real time, and the control module is further used to convert the received electrical signal into the Lab detection value of the color signal described in the Lab color space.

[0157] In this embodiment, the control module is used to convert the electrical signal into the Lab detection value described in the Lab color space, compare the Lab detection value with the Lab standard value, and judge whether hydrogen leakage has occurred according to the comparison result.

[0158] Further, the control module is used to determine that hydrogen leakage has occurred when the comparison result is that the L value of the Lab detection value is less than the L value of the Lab standard value, the a value of the Lab detection value is less than the a value of the Lab standard value, the b value of the Lab detection value is less than the b value of the Lab standard value, and the difference between the L value of the Lab detection value and the L value of the Lab standard value is less than the preset value. Specifically, obtain the Lab detection value at a certain moment, compare the Lab detection value at a certain moment with the Lab standard value, and obtain the comparison result. When the comparison result is: the L value of the Lab detection value at a certain moment is less than the L value of the Lab standard value, the a value of the Lab detection value at a certain moment is less than the a value of the Lab standard value, the b value of the Lab detection value at a certain moment is less than the b value of the Lab standard value, and the difference between the L value of the Lab detection value at a certain moment and the L value of the Lab standard value is less than the preset value, it is determined that hydrogen leakage has occurred.

[0159] That is:

[0160] When L t < L, a t < a, b t < b and L - L t > 1, it is determined that hydrogen leakage has occurred.

[0161] Among them, L t is the L value of the Lab detection value at time t, a t is the a value of the Lab detection value at time t, b tLet b be the Lab detection value at time t, L be the Lab standard value, a be the Lab standard value, b be the Lab standard value, and the preset value is 1.

[0162] To avoid false alarms caused by environmental changes, the L value change should be greater than 1 when calculating color changes, i.e., LL. t >1.

[0163] When a hydrogen leak is detected, the control module calculates the risk level of the hydrogen leak and issues an alarm of the corresponding level based on the risk level to execute the corresponding fire-fighting actions.

[0164] Specifically, the control module is used to calculate the color change rate of the color signal of the hydrogen-sensitive color-changing tape 200 based on the Lab detection value of the color signal of the hydrogen-sensitive color-changing tape 200;

[0165] The control module is used to calculate the color change rate of the hydrogen-sensitive color-changing tape 200 based on the Lab detection value of the color signal of the hydrogen-sensitive color-changing tape 200, including:

[0166] Calculate the color change rate of the L value in the Lab detection value;

[0167] Calculate the color change rate of the α value in the Lab detection values; and

[0168] Calculate the color change rate of the b-value in the Lab detection values.

[0169] Through L ， =(LL t The color change rate of the L value in the Lab detection value is calculated by ) / t.

[0170] via a ， =(aa t The color change rate of the 'a' value in the Lab detection value is obtained by calculating ) / t.

[0171] via b ， =(bb t The color change rate of the b value in the Lab detection value is calculated by ) / t.

[0172] Where L ， a represents the color change rate of the L value in the Lab detection value. ， Let a be the color change rate of the Lab detection value, and b be the value of color change rate. ， The color change rate is represented by the b-value in the Lab detection values.

[0173] The risk level of hydrogen leakage is calculated based on the color change rate of the color signal of the hydrogen-sensitive color-changing tape 200.

[0174] In this embodiment, the control module is used to calculate the risk level of hydrogen leakage based on the color change rate of the color signal of the hydrogen-sensitive color-changing tape 200, including:

[0175] The first risk coefficient is calculated based on the color change rate of the 'a' value in the Lab detection value and the first correction coefficient.

[0176] The second risk coefficient is calculated based on the color change rate of the b-value in the Lab detection value and the second correction coefficient.

[0177] The color change rate of the L value in the Lab detection value is used as the third risk factor;

[0178] Specifically, the first risk factor is m×a ， The second risk coefficient is n×b ’ And the third risk coefficient is L ， m is the first correction factor, and n is the second correction factor.

[0179] The final risk coefficient is obtained based on the first, second, and third risk coefficients; specifically, the maximum value among the first, second, and third risk coefficients is selected as the final risk coefficient, i.e., the final risk coefficient R. L =max[L ’ ,m×a ’ ,n×b ’ ], where R L This represents the final risk coefficient.

[0180] Furthermore, the present invention provides a risk level classification table for hydrogen leakage as follows:

[0181]

[0182] The risk level of hydrogen leakage is determined based on the final risk coefficient.

[0183] After the control module obtains the risk level of the hydrogen leak, it sends an alarm command corresponding to that risk level to the alarm module. The alarm module then executes alarm actions based on the alarm command, and these actions are tiered. The corresponding level of fire-fighting action is then executed based on the alarm level.

[0184] Figure 2 This is a schematic diagram of the monitoring sensor 300 provided in Embodiment 1 of the present invention, as shown below. Figure 2As shown, in this embodiment, the monitoring sensor 300 includes a light source assembly 310, a photodetector 320, and a data repeater 340. The light source assembly 310 is used to illuminate the hydrogen-sensitive color-changing tape 200. The photodetector 320 is used to collect the color signal of the hydrogen-sensitive color-changing tape 200 and convert the collected color signal into an electrical signal. The data repeater 340 is used to receive the electrical signal sent from the photodetector 320 and send the electrical signal to the control module.

[0185] Specifically, the hydrogen-sensitive color-changing tape 200 is affixed to the connection of the hydrogen pipeline 100 according to the actual situation of the hydrogen pipeline 100, and the monitoring sensor 300 is mounted on the hydrogen-sensitive color-changing tape 200 to monitor the color signal of the hydrogen-sensitive color-changing tape 200.

[0186] Example 3

[0187] This embodiment uses, as follows: Figure 3 The hydrogen refueling station's direct pipeline.

[0188] (1) Install a hydrogen-sensitive color-changing tape 200 at the connection of the direct pipeline of the hydrogen refueling station. The hydrogen-sensitive color-changing tape 200 has the characteristic of changing color in response to hydrogen leakage, changing from light color to dark blue. In the Lab color space, before the color change, the L value is 75, the a value is 1.2, and the b value is 0.3; after the color change, the L value is 42, the a value is -8.5, and the b value is -17.

[0189] (2) Based on the characteristics of the two-way connection of the straight pipe, the rectangular monitoring sensor 300 is installed on the hydrogen-sensitive color-changing tape 200;

[0190] (3) The color information of the hydrogen-sensitive color-changing tape 200 is collected in real time and converted into an electrical signal by the monitoring sensor 300 for transmission;

[0191] (4) Compare the electrical signal of the color change of the hydrogen-sensitive color-changing tape 200 with the standard color value;

[0192] No hydrogen leakage occurred at the hydrogen direct pipeline connection point of the hydrogen refueling station during the time period specified in this embodiment.

[0193] Example 4

[0194] This embodiment uses, as follows: Figure 3 The hydrogen refueling station's direct pipeline.

[0195] (1) Install a hydrogen-sensitive color-changing tape 200 at the connection of the direct pipeline in the hydrogen refueling station. The hydrogen-sensitive color-changing tape 200 has the characteristic of changing color in response to hydrogen leakage, changing from light color to dark blue. Among them, described in the Lab color space, the L value before color change is 75, the a value is 1.2, and the b value is 0.3; after complete color change, the L value is 42, the a value is -8.5, and the b value is -17.

[0196] (2) According to the characteristics of the two-way connection of the direct pipeline, install the cuboid monitoring sensor 300 on the hydrogen-sensitive color-changing tape 200;

[0197] (3) Collect the color information of the hydrogen-sensitive color-changing tape 200 in real time and convert it into an electrical signal through the monitoring sensor 300 for transmission;

[0198] (4) Compare the electrical signal of the color change of the hydrogen-sensitive color-changing tape 200 with the standard color value; when it is detected that L t = 56, a t = -3.7, b t = -12, satisfying "L t < L, a t < a, b t < b and L - L t > 1", then perform operation (5);

[0199] (5) Send out a hydrogen leakage alarm signal and calculate the risk level of hydrogen leakage. For this embodiment, t = 12s, m = 4.5, n = 1.4, and R L = 1.8;

[0200] (6) Output the risk level of hydrogen leakage and take interlock response operations according to the risk level.

[0201] Referring to the data, at this time, the risk level of hydrogen leakage is medium risk. The operators in the hydrogen refueling station should strengthen the inspection of the leakage alarm sites to avoid the increase of the risk level of hydrogen leakage.

[0202] Embodiment 5

[0203] This embodiment uses the three-way pipeline of the hydrogen refueling station as Figure 4 described.

[0204] (1) Install a hydrogen-sensitive color-changing tape 200 at the connection of the three-way pipeline in the hydrogen refueling station. The hydrogen-sensitive color-changing tape 200 has the characteristic of changing color in response to hydrogen leakage, changing from light color to dark blue. Among them, described in the Lab color space, the L value before color change is 67, the a value is -0.5, and the b value is 0.1; after complete color change, the L value is 45, the a value is -5.3, and the b value is -9.

[0205] (2) Install the T-shaped monitoring sensor 300 on the hydrogen-sensitive color-changing tape 200 according to the characteristics of the three-way connection of the straight-through pipeline;

[0206] (3) Collect the color information of the hydrogen-sensitive color-changing tape 200 in real time and convert it into an electrical signal for transmission through the monitoring sensor 300;

[0207] (4) Compare the electrical signal of the color change of the hydrogen-sensitive color-changing tape 200 with the standard color value; within the time period specified in this embodiment, no hydrogen leakage occurred at the three-way pipeline connection of the hydrogen refueling station.

[0208] Embodiment 6

[0209] This embodiment uses the three-way pipeline of the hydrogen refueling station as Figure 4 described.

[0210] (1) Install a hydrogen-sensitive color-changing tape 200 at the three-way pipeline connection of the hydrogen refueling station. This hydrogen-sensitive color-changing tape 200 has the characteristic of changing color in response to hydrogen leakage, changing from light color to dark blue. Among them, described in the Lab color space, the L value before color change is 67, the a value is -0.5, and the b value is 0.1; after complete color change, the L value is 45, the a value is -5.3, and the b value is -9.

[0211] (2) Install the T-shaped monitoring sensor 300 on the hydrogen-sensitive color-changing tape 200 according to the characteristics of the three-way connection of the straight-through pipeline;

[0212] (3) Collect the color information of the hydrogen-sensitive color-changing tape 200 in real time and convert it into an electrical signal for transmission through the monitoring sensor 300;

[0213] (4) Compare the electrical signal of the color change of the hydrogen-sensitive color-changing tape 200 with the standard color value; it is detected that L t = 52, a t = -2.8, b t = -8.1, satisfying "L t < L, a t < a, b t < b and L - L t > 1", then perform operation (5);

[0214] (5) Send out a hydrogen leakage alarm signal and calculate the risk level of hydrogen leakage. For this embodiment, t = 16s, m = 5.2, n = 1.3, and R L = 0.9;

[0215] (6) Output the risk level of hydrogen leakage and take interlock response operations according to the risk level. Referring to the data, the hydrogen leakage risk level is the low risk level at this time. If the risk level remains basically unchanged, the original state can be maintained.

[0216] Example 7

[0217] This embodiment uses, as follows: Figure 5 The hydrogen refueling station's 90° pipeline.

[0218] (1) Install a hydrogen-sensitive color-changing tape 200 at the 90° pipeline connection of the hydrogen refueling station. The hydrogen-sensitive color-changing tape 200 has the characteristic of changing color in response to hydrogen leakage, changing from light color to dark blue. In the Lab color space, before the color change, the L value is 75, the a value is 1.2, and the b value is 0.3; after the color change, the L value is 42, the a value is -8.5, and the b value is -17.

[0219] (2) Based on the characteristics of the 90° pipe connection, the right-angle monitoring sensor 300 is installed on the hydrogen-sensitive color-changing tape 200;

[0220] (3) The color information of the hydrogen-sensitive color-changing tape 200 is collected in real time and converted into an electrical signal by the monitoring sensor 300 for transmission;

[0221] (4) Compare the electrical signal of the color change of the hydrogen-sensitive color-changing tape 200 with the standard color value;

[0222] No hydrogen leaks occurred at the hydrogen right-angle pipe connection of the hydrogen refueling station during the time period specified in this embodiment.

[0223] Example 8

[0224] This embodiment uses, as follows: Figure 5 The hydrogen refueling station's 90° pipeline.

[0225] (1) Install a hydrogen-sensitive color-changing tape 200 at the 90° pipeline connection of the hydrogen refueling station. The hydrogen-sensitive color-changing tape 200 has the characteristic of changing color in response to hydrogen leakage, changing from light color to dark blue. In the Lab color space, before the color change, the L value is 75, the a value is 1.2, and the b value is 0.3; after the color change, the L value is 42, the a value is -8.5, and the b value is -17.

[0226] (2) Based on the characteristics of the 90° pipe connection, the right-angle monitoring sensor 300 is installed on the hydrogen-sensitive color-changing tape 200;

[0227] (3) The color information of the hydrogen-sensitive color-changing tape 200 is collected in real time and converted into an electrical signal by the monitoring sensor 300 for transmission;

[0228] (4) Compare the electrical signal of the color change of the hydrogen-sensitive color-changing tape 200 with the standard color value; L was detected. t =49, a t =-6.3, b t =-14.5, satisfying "L t <L,a t <a,bt <b and L-L t > 1”, then perform operation (5);

[0229] (5) Send out a hydrogen leakage alarm signal and calculate the risk level of hydrogen leakage. For this embodiment, t = 9s, m = 4.5, n = 1.4, and R L = 3.7;

[0230] (6) Output the risk level of hydrogen leakage and take interlock response operations according to the risk level. Referring to the data, at this time, the risk level of hydrogen leakage is high risk. The hydrogen refueling station operator should cut off the hydrogen leakage site from the hydrogen-containing system as much as possible and take corresponding pressure relief and treatment measures to avoid further expansion of hydrogen leakage.

[0231] Example 9

[0232] This embodiment uses the hydrogen-containing equipment 400 of the hydrogen refueling station as Figure 6 [[ID=​​​​​​​​​​​​​​​​​​​​​​​​

[0240] (2) Install the cuboid monitoring sensor 300 on the hydrogen-sensitive color-changing tape 200 according to the characteristics of the hydrogen-containing equipment 400;

[0241] (3) Collect the color information of the hydrogen-sensitive color-changing tape 200 in real time, and convert it into an electrical signal through the monitoring sensor 300 for transmission;

[0242] (4) Compare the electrical signal of the color change of the hydrogen-sensitive color-changing tape 200 with the standard color value; when it is detected that L t = 55, a t = -1.9, b t = -6.7, satisfying "L t < L, a t < a, b t < b and L - L t > 1", then perform operation (5);

[0243] (5) Send out a hydrogen leakage alarm signal and calculate the hydrogen leakage risk level. For this embodiment, t = 8s, m = 4.5, n = 1.4, and R L = 1.3.

[0244] (6) Output the hydrogen leakage risk level and take interlock response operations according to the risk level. Referring to the data, the hydrogen leakage risk level is medium risk at this time, and the hydrogen refueling station operator should strengthen the inspection of the leakage alarm site to avoid the increase of the hydrogen leakage risk level.

[0245] The embodiment of the present invention also provides a computer device, including: a memory, a processor, and a computer program, where the computer program is stored in the memory and is configured to be executed by the processor to implement the above hydrogen leakage detection and alarm method.

[0246] The embodiment of the present invention also provides a machine-readable storage medium, on which computer program instructions are stored, and when the computer program instructions are executed by the processor, the above hydrogen leakage detection and alarm method is implemented.

[0247] Those skilled in the art should understand that the embodiments of the present invention can be provided as a method, a system, or a computer program product. Therefore, the present invention can be in the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present invention can be in the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memories, CD-ROMs, optical memories, etc.) containing computer-usable program codes. The solutions in the embodiments of the present invention can be implemented in various computer languages, for example, object-oriented programming languages such as Java and interpreted scripting languages such as JavaScript.

[0248] This invention is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0249] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0250] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0251] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0252] 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 hydrogen gas leak detection alarm apparatus, characterized by, The method comprises the following steps: A hydrogen-sensitive color-changing tape is attached to a hydrogen pipeline joint to sense hydrogen leakage at the hydrogen pipeline joint, and a color signal is displayed according to the concentration of the leaked hydrogen, wherein the color signal of the hydrogen-sensitive color-changing tape is described in Lab color space; A monitoring sensor is used to monitor the hydrogen-sensitive color-changing tape, collect the color signal of the hydrogen-sensitive color-changing tape, and convert the collected color signal into an electrical signal; A control module is used to determine whether hydrogen leakage occurs according to the electrical signal of the monitoring sensor, and calculate the risk level of the hydrogen leakage when it is determined that hydrogen leakage occurs, wherein the control module is also used to convert the received electrical signal into a Lab detection value of the color signal described in Lab color space; An alarm module is used to perform an alarm action according to the risk level of the hydrogen leakage; When it is determined that hydrogen leakage occurs, the control module calculates the risk level of the hydrogen leakage, which comprises the following steps: The color-changing rate of the color signal of the hydrogen-sensitive color-changing tape is calculated according to the Lab detection value of the color signal of the hydrogen-sensitive color-changing tape, which comprises the following steps: calculating the color-changing rate of the L value in the Lab detection value, calculating the color-changing rate of the a value in the Lab detection value, and calculating the color-changing rate of the b value in the Lab detection value; The risk level of the hydrogen leakage is calculated according to the color-changing rate of the color signal of the hydrogen-sensitive color-changing tape.

2. The hydrogen leak detection alarm apparatus of claim 1, wherein The monitoring sensor comprises a light source assembly, a photoelectric receiver, and a data relay; The light source assembly is used to irradiate the hydrogen-sensitive color-changing tape; The photoelectric receiver is used to collect the color signal of the hydrogen-sensitive color-changing tape and convert the collected color signal into an electrical signal; The data relay is used to receive the electrical signal sent by the photoelectric receiver and send the electrical signal to the control module.

3. The hydrogen leak detection alarm apparatus of claim 1, wherein The control module is specifically used to compare the Lab detection value with a Lab standard value, and determine whether hydrogen leakage occurs according to the comparison result.

4. The hydrogen leak detection alarm apparatus of claim 3, wherein The comparison of the Lab detection value with the Lab standard value and the determination of whether hydrogen leakage occurs according to the comparison result comprise the following steps: When the comparison result is that the L value of the Lab detection value is less than the L value of the Lab standard value, the a value of the Lab detection value is less than the a value of the Lab standard value, the b value of the Lab detection value is less than the b value of the Lab standard value, and the difference between the L value of the Lab detection value and the L value of the Lab standard value is less than a preset value, it is determined that hydrogen leakage occurs.

5. The hydrogen leak detection alarm apparatus of claim 3, wherein, The calculation of the risk level of the hydrogen leakage according to the color-changing rate of the color signal of the hydrogen-sensitive color-changing tape comprises the following steps: A first risk coefficient is calculated according to the color-changing rate of the a value in the Lab detection value and a first correction coefficient; A second risk coefficient is calculated according to the color-changing rate of the b value in the Lab detection value and a second correction coefficient; The color-changing rate of the L value in the Lab detection value is taken as a third risk coefficient; A final risk coefficient is obtained according to the first risk coefficient, the second risk coefficient, and the third risk coefficient; The risk level of the hydrogen leakage is obtained according to the final risk coefficient.

6. A hydrogen gas leak detection alarm method characterized by, The method comprises the following steps: A hydrogen-sensitive color-changing adhesive tape is attached to a hydrogen pipeline connection, which is used to sense hydrogen leakage at the hydrogen pipeline connection, and changes color in response to the concentration of the leaked hydrogen, displaying a color signal, wherein the color signal of the hydrogen-sensitive color-changing adhesive tape is described using Lab color space; Real-time monitoring of the hydrogen-sensitive color-changing adhesive tape, collecting the color signal of the hydrogen-sensitive color-changing adhesive tape, and converting the collected color signal into an electrical signal; Converting the electrical signal into a Lab detection value of the color signal described using Lab color space; Determining whether hydrogen leakage has occurred based on the electrical signal; When it is determined that hydrogen leakage has occurred, calculating the risk level of hydrogen leakage; Performing an alarm action according to the risk level of hydrogen leakage; Wherein, when it is determined that hydrogen leakage has occurred, the risk level of hydrogen leakage is calculated, including: Calculating the color change rate of the color signal of the hydrogen-sensitive color-changing adhesive tape based on the Lab detection value of the color signal of the hydrogen-sensitive color-changing adhesive tape, including: calculating the color change rate of the L value in the Lab detection value, calculating the color change rate of the a value in the Lab detection value, and calculating the color change rate of the b value in the Lab detection value; Calculating the risk level of hydrogen leakage based on the color change rate of the color signal of the hydrogen-sensitive color-changing adhesive tape.

7. The hydrogen gas leak detection alarm method of claim 6, wherein, Determining whether hydrogen leakage has occurred based on the electrical signal, including: Comparing the Lab detection value with the Lab standard value, and determining whether hydrogen leakage has occurred based on the comparison result, wherein the color signal is described using Lab color space.

8. The hydrogen gas leak detection alarm method of claim 7, wherein, The comparison between the Lab detection value and the Lab standard value, and the determination of whether hydrogen leakage has occurred based on the comparison result, including: When the comparison result is that the L value of the Lab detection value is less than the L value of the Lab standard value, the a value of the Lab detection value is less than the a value of the Lab standard value, the b value of the Lab detection value is less than the b value of the Lab standard value, and the difference between the L value of the Lab detection value and the L value of the Lab standard value is less than a predetermined value, it is determined that hydrogen leakage has occurred.

9. The hydrogen gas leak detection alarm method of claim 8, wherein, The calculation of the risk level of hydrogen leakage based on the color change rate of the color signal of the hydrogen-sensitive color-changing adhesive tape, including: Calculating a first risk coefficient based on the color change rate of the a value in the Lab detection value and a first correction coefficient; Calculating a second risk coefficient based on the color change rate of the b value in the Lab detection value and a second correction coefficient; Taking the color change rate of the L value in the Lab detection value as a third risk coefficient; Obtaining a final risk coefficient based on the first risk coefficient, the second risk coefficient, and the third risk coefficient; Obtaining the risk level of hydrogen leakage based on the final risk coefficient.

10. A computer device, comprising: Including: a memory; a processor; and a computer program; The computer program is stored in the memory and is configured to be executed by the processor to implement the hydrogen leakage detection and alarm method of any one of claims 6 to 9.

11. A computer readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to implement the hydrogen leakage detection and alarm method of any one of claims 6 to 9.

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