Hydrogen leakage detection alarm device and method and computer equipment

Abstract

The invention provides a hydrogen leakage detection alarm device and method and computer equipment, and belongs to the field of hydrogen leakage detection. The hydrogen leakage detection and alarm device comprises a hydrogen-sensitive color-changing adhesive tape which is attached to the joint of a hydrogen pipeline and used for sensing hydrogen leaked from the joint of the hydrogen pipeline, making color-changing response according to the concentration of the leaked hydrogen and displaying a color signal; the monitoring sensor is used for monitoring the hydrogen-sensitive color-changing adhesive tape, acquiring a color signal of the hydrogen-sensitive color-changing adhesive tape and converting the acquired color signal into an electrical signal; the control module is used for judging whether hydrogen leakage occurs or not according to the electrical signal, and when hydrogen leakage occurs, the risk level of hydrogen leakage is calculated; and the alarm module is used for executing an alarm action according to the risk level of hydrogen leakage.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen leakage detection, and in particular to a hydrogen leakage detection alarm device, a hydrogen leakage detection alarm method, a computer device and a computer-readable storage medium. Background Art

[0002] Hydrogen energy has multiple advantages such as wide sources, high energy density, zero emissions, and a wide range of uses. It is of great significance in ensuring energy supply security, improving atmospheric environmental quality, and promoting energy structure upgrading.

[0003] There are many connection locations for equipment and pipelines in hydrogen refueling stations. According to preliminary statistics, there are more than 100 connection locations for compressor skids, more than 20 connection locations inside hydrogen refueling machines, and more than 10 connection locations inside hydrogen unloading columns. Usually, only one set of hydrogen leak detection alarm is installed in hydrogen refueling machines and hydrogen unloading columns, and 1 to 2 sets of hydrogen leak detection alarms are installed in compressor skids, which makes it difficult to effectively detect and locate hydrogen leaks.

[0004] At the same time, the hydrogen leak detection alarm can only detect whether there is a leak, but cannot provide a more quantitative analysis of the amount of hydrogen leakage or even the risks caused by the leak, which restricts the large-scale promotion and application of this technology. Summary of the invention

[0005] In order to solve the above-mentioned technical defects, the present invention provides a hydrogen leak detection alarm device and method, and a computer device. The hydrogen leak detection alarm device is used to use a hydrogen-sensitive color-changing tape to realize hydrogen leak monitoring, and adopts point-to-point hydrogen leak detection and alarm, which solves the problem that video recognition is easily disturbed by external factors such as the environment and taking pictures, resulting in false alarms and missed alarms; by calculating the risk level of hydrogen leakage, a quantitative analysis of hydrogen leakage is realized; through the designed monitoring sensor, it is suitable for installation in all pipelines and equipment of the gas station, and accurate inspection of each point is realized, which solves the problem that hydrogen leakage is not easy to detect in the channel away from the personnel inspection, and realizes the important progress of hydrogen-sensitive color-changing technology from relying on personnel inspection to automatic alarm.

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

[0007] Hydrogen-sensitive color-changing tape is attached to the connection of hydrogen pipelines to sense hydrogen leakage at the connection of hydrogen pipelines, and changes color in response to the concentration of leaked hydrogen to display color signals;

[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] A control module, used to determine whether hydrogen leakage occurs according to the electrical signal of the monitoring sensor, and when it is determined that hydrogen leakage occurs, calculate the risk level of hydrogen leakage;

[0010] The alarm module is used to execute an alarm action according to the risk level of the hydrogen leakage.

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

[0012] In an embodiment of the present invention, the monitoring sensor includes a light source assembly, a photoelectric receiver and a data repeater. The light source assembly is used to illuminate 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 repeater is used to receive the electrical signal sent from the photoelectric receiver and send the electrical signal to the control module.

[0013] In the embodiment of the present invention, the control module is specifically used to convert the electrical signal into a Lab detection value described in the Lab color space, compare the Lab detection value with the Lab standard value, and determine whether hydrogen leakage occurs according to the comparison result.

[0014] In the embodiment of the present invention, comparing the Lab detection value with the Lab standard value and judging whether hydrogen leakage occurs according to the comparison result includes:

[0015] It is used to determine that a hydrogen leak has occurred when the comparison result is that the L value of the Lab detection value is smaller than the L value of the Lab standard value, the a value of the Lab detection value is smaller than the a value of the Lab standard value, the b value of the Lab detection value is smaller 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 smaller than a preset value.

[0016] In an embodiment of the present invention, when it is determined that hydrogen leakage occurs, calculating the risk level of hydrogen leakage includes:

[0017] Calculate the color change rate of the hydrogen-sensitive color-changing tape color signal according to the Lab detection value of the hydrogen-sensitive color-changing tape color signal;

[0018] 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.

[0019] In an embodiment of the present invention, the method of calculating the color change rate of the color signal of the hydrogen-sensitive color-changing tape according to 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 test value;

[0021] Calculate the color change rate of the a value in the Lab test value; and

[0022] Calculate the color change rate of the b value in the Lab test value.

[0023] In the embodiment of the present invention, the step of calculating the risk level of hydrogen leakage according to the color change rate of the color signal of the hydrogen-sensitive color-changing tape includes:

[0024] The first risk coefficient is calculated according to the color change rate of the a value in the Lab test value and the first correction coefficient;

[0025] The second risk coefficient is calculated according to the color change rate of the a value in the Lab test value and the first correction coefficient;

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

[0027] Obtaining a final risk coefficient according to the first risk coefficient, the second risk coefficient and the third risk coefficient;

[0028] The risk level of hydrogen leakage is obtained according to the final risk factor.

[0029] A second aspect of the present invention provides a hydrogen leak detection and alarm method, the method comprising:

[0030] A hydrogen-sensitive color-changing tape is attached at the connection of the hydrogen pipeline, and the hydrogen-sensitive color-changing tape is used to sense the hydrogen leaked at the connection of the hydrogen pipeline, and changes color in response to the concentration of the leaked hydrogen to display a color signal;

[0031] Real-time monitoring of the hydrogen-sensitive color-changing tape, collecting the color signal of the hydrogen-sensitive color-changing tape, and converting the collected color signal into an electrical signal;

[0032] Determine whether hydrogen leakage occurs based on electrical signals;

[0033] When it is determined that hydrogen leakage occurs, calculate the risk level of hydrogen leakage;

[0034] Execute alarm actions according to the risk level of hydrogen leakage.

[0035] In an embodiment of the present invention,

[0036] The determining whether hydrogen leakage occurs according to the electrical signal comprises:

[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 whether hydrogen leakage occurs is determined according to the comparison result. The color signal is described in the Lab color space. ,.

[0038] In the embodiment of the present invention, the step of comparing the Lab detection value with the Lab standard value and determining whether hydrogen leakage occurs according to the comparison result includes:

[0039] When the comparison result is that the L value of the Lab detection value is smaller than the L value of the Lab standard value, the a value of the Lab detection value is smaller than the a value of the Lab standard value, the b value of the Lab detection value is smaller 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 smaller than the preset value, it is determined that hydrogen leakage has occurred.

[0040] In the embodiment of the present invention, when it is determined that hydrogen leakage occurs, calculating the risk level of hydrogen leakage includes:

[0041] Calculate the color change rate of the hydrogen-sensitive color-changing tape color signal according to the Lab detection value of the hydrogen-sensitive color-changing tape color signal;

[0042] 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.

[0043] In an embodiment of the present invention, the method of calculating the color change rate of the color signal of the hydrogen-sensitive color-changing tape according to 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 test value;

[0045] Calculate the color change rate of the a value in the Lab test value; and

[0046] Calculate the color change rate of the b value in the Lab test value.

[0047] In the embodiment of the present invention, the step of calculating the risk level of hydrogen leakage according to the color change rate of the color signal of the hydrogen-sensitive color-changing tape includes:

[0048] The first risk coefficient is calculated according to the color change rate of the a value in the Lab test value and the first correction coefficient;

[0049] The second risk coefficient is calculated according to the color change rate of the a value in the Lab test value and the first correction coefficient;

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

[0051] Obtaining a final risk coefficient according to the first risk coefficient, the second risk coefficient and the third risk coefficient;

[0052] The risk level of hydrogen leakage is obtained according to the final risk factor.

[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 is configured to be executed by a processor to implement the hydrogen leak detection and alarm method as described above.

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

[0059] Through the above technical scheme, the present invention uses hydrogen-sensitive color-changing tape to realize hydrogen leakage monitoring, adopts point-to-point hydrogen leakage detection and alarm, and solves the problem that video recognition is easily disturbed by external factors such as environment and photography, resulting in false alarms and missed alarms; by calculating the risk level of hydrogen leakage, quantitative analysis of hydrogen leakage is realized; through the designed monitoring sensor, it is suitable for installation in all pipelines and equipment of the gas station to realize accurate inspection of each point, and solves the problem that hydrogen leakage is not easy to detect in the inspection channel away from personnel, and realizes the important progress of hydrogen-sensitive color-changing technology from relying on personnel inspection to automatic alarm.

[0060] Other features and advantages of the technical solution of the present invention will be described in detail in the specific implementation section below. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

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

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

[0064] Figure 3 It is a structural schematic diagram of a hydrogen leakage detection and alarm device installed in a direct pipeline of a hydrogen filling station provided in Example 1 of the present invention;

[0065] Figure 4 It is a structural schematic diagram of a hydrogen leakage detection and alarm device installed on a three-way pipeline of a hydrogen filling station provided in Example 1 of the present invention;

[0066] Figure 5 It is a structural schematic diagram of a hydrogen leakage detection and alarm device installed on a 90° pipeline of a hydrogen filling station provided in Example 1 of the present invention;

[0067] Figure 6 It is a structural schematic diagram of a hydrogen leakage detection and alarm device installed on the surface of hydrogen filling station equipment provided in Example 1 of the present invention;

[0068] Figure 7 This is a flow chart of the hydrogen leakage detection and alarm method provided in Example 2 of the present invention.

[0069] Description of Reference Numerals

[0070] 100-hydrogen pipeline, 110-connectors on hydrogen pipeline, 200-hydrogen sensitive color changing tape, 300-monitoring sensor, 310-light source assembly, 320-photoelectric receiver, 340-data repeater, 400-hydrogen equipment. DETAILED DESCRIPTION

[0071] In order to make the technical solutions and advantages of the embodiments of the present invention more clearly understood, the exemplary embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than an exhaustive list of all the embodiments. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0072] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0073] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0074] In the present invention, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0075] In the process of realizing the present invention, the inventors found that there are many equipment and pipeline connection locations in the hydrogenation station. According to preliminary statistics, there are >100 connection locations of the compressor skid in the hydrogenation station, >20 connection locations inside the hydrogenation machine, and >10 connection locations inside the hydrogenation column. Usually, only one set of hydrogen leak detection alarm is installed in the hydrogenation machine and the hydrogenation column, and 1 to 2 sets of hydrogen leak detection alarm are installed in the compressor skid, which makes it difficult to effectively detect and locate hydrogen leaks. At the same time, the hydrogen leak detection alarm can only detect the presence or absence of a leak, and cannot provide a more quantitative analysis of the amount of hydrogen leakage or even the risk caused by the leak, which restricts the large-scale promotion and application of this technology.

[0076] In response to the above problems, a hydrogen leak detection alarm device is provided in an embodiment of the present invention, including: a hydrogen-sensitive color-changing tape, which is made of hydrogen-sensitive leak detection material and is attached to the connection of the hydrogen pipeline, and changes color in response to the concentration of hydrogen leakage to display a color signal; a monitoring sensor, which 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, which is used to determine whether a hydrogen leak occurs based on the electrical signal, and calculate the risk level of hydrogen leakage when a hydrogen leak occurs; an alarm module, which is used to execute an alarm action based on the risk level of hydrogen leakage. The present invention collects the color signal on the hydrogen-sensitive color-changing tape through a monitoring sensor and converts it into an electrical signal. The control module determines whether a hydrogen leak occurs at the monitoring location based on the received electrical signal, and calculates the level of hydrogen leakage to achieve quantitative analysis of hydrogen leakage, thereby ensuring the safe operation of the hydrogen refueling station. Through the above technical scheme, the present invention uses hydrogen-sensitive color-changing tape to realize hydrogen leakage monitoring, adopts point-to-point hydrogen leakage detection and alarm, and solves the problem that video recognition is easily disturbed by external factors such as environment and photography, resulting in false alarms and missed alarms; by calculating the risk level of hydrogen leakage, quantitative analysis of hydrogen leakage is realized; through the designed monitoring sensor, it is suitable for installation in all pipelines and equipment of the gas station to realize accurate inspection of each point, and solves the problem that hydrogen leakage is not easy to detect in the inspection channel away from personnel, and realizes the important progress of hydrogen-sensitive color-changing technology from relying on personnel inspection to automatic alarm.

[0077] Example 1

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

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

[0080] A monitoring sensor 300 is used to monitor the hydrogen-sensitive color-changing tape 200, collect color signals of the hydrogen-sensitive color-changing tape 200, and convert the collected color signals into electrical signals;

[0081] a control module, used to determine whether hydrogen leakage occurs according to the electrical signal, and calculate the risk level of hydrogen leakage when hydrogen leakage occurs;

[0082] The alarm module is used to execute an alarm action according to the risk level of the hydrogen leakage.

[0083] Specifically, the hydrogen-sensitive color-changing adhesive is prepared using hydrogen-sensitive leakage detection materials so that it has the characteristic of color change response to hydrogen leakage. As the concentration of leaked hydrogen increases, the hydrogen-sensitive color-changing adhesive tape 200 changes from light color to dark blue. Furthermore, the color signal of the hydrogen-sensitive color-changing adhesive tape 200 is described using the Lab color space. Among them, the description using the Lab color space is that the L value in the Lab value before the color change is 60 to 80, the a value is -10 to 10, and the b value is -15 to 15; the L value in the Lab value after the color change is 30 to 60, the a value is -20 to 0, and the b value is -30 to 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, and 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 the electrical signal into a Lab detection value described in the Lab color space, compare the Lab detection value with the Lab standard value, and determine whether hydrogen leakage occurs according to the comparison result.

[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, obtain the Lab detection value at a certain moment, compare the Lab detection value at a certain moment 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 a 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] Wherein, 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 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 discoloring tape 200 according to the Lab detection value of the color signal of the hydrogen-sensitive discoloring tape 200;

[0093] The control module is configured to calculate the color change rate of the color signal of the hydrogen-sensitive discoloring tape 200 according to the Lab detection value of the color signal of the hydrogen-sensitive discoloring tape 200, 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 test value.

[0097] By L'=(LL t ) / t to calculate the color change rate of the L value in the Lab test value.

[0098] By a'=(aa t ) / t to calculate the color change rate of the a value in the Lab test value.

[0099] By b'=(bb t ) / t to calculate the color change rate of the b value in the Lab test value.

[0100] Wherein L' is the color change rate of the L value in the Lab detection value, a' is the color change rate of the a value in the Lab detection value, and b' is the color change rate of the b value in the Lab detection value.

[0101] The risk level of hydrogen leakage is calculated according to 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 according to the color change rate of the color signal of the hydrogen-sensitive color-changing tape 200, including:

[0103] The first risk coefficient is calculated according to the color change rate of the a value in the Lab test value and the first correction coefficient;

[0104] The second risk coefficient is calculated according to the color change rate of the a value in the Lab test value and the first correction coefficient;

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

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

[0107] The final risk coefficient is obtained according to the first risk coefficient, the second risk coefficient and the third risk coefficient; specifically, the maximum value among the first risk quantity, the second risk coefficient and the third risk coefficient is selected as the final risk coefficient. That is, the final risk coefficient R L =max[L',m×a',n×b'], where R L is the final risk factor.

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

[0109] <![CDATA[R L Value]]> Risk Level ≤1 Low risk 1～3 Medium risk 3～5 High risk ≥5 Emergent Risk

[0110] The risk level of hydrogen leakage is obtained according to the final risk factor.

[0111] After the control module obtains the risk level of hydrogen leakage, the control module is used to send an alarm instruction corresponding to the risk level of hydrogen leakage to the alarm module, and the alarm module executes an alarm action according to the alarm instruction. Correspondingly, the alarm action is also graded. Firefighting actions of corresponding levels are executed according to the level of the alarm action.

[0112] Figure 2 is a schematic diagram of the structure of the monitoring sensor 300 provided in Example 1 of the present invention, such as Figure 2 As shown, in this embodiment, the monitoring sensor 300 includes a light source assembly 310, a photoelectric receiver 320 and a data repeater 340. The light source assembly 310 is used to illuminate the hydrogen-sensitive color-changing tape 200. The photoelectric receiver 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 photoelectric receiver 320 and send the electrical signal to the control module.

[0113] Specifically, the hydrogen-sensitive color-changing tape 200 is attached 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 Schematic diagram of the structure of a hydrogen leakage detection and alarm device installed in a hydrogen refueling station through pipeline provided in Example 1 of the present invention, Figure 3 As shown, the hydrogen-sensitive color-changing tape 200 is attached 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 Schematic diagram of the structure of the three-way pipeline of the hydrogen filling station provided in Example 1 of the present invention is equipped with a hydrogen leakage detection and alarm device, such as Figure 4 As shown, the hydrogen-sensitive color-changing tape 200 is attached to the connection of the three-way pipe, the horizontal pipe of the three-way pipe is attached with the hydrogen-sensitive color-changing tape 200, and the vertical pipe of the three-way pipe is also attached with the vertical tape. Correspondingly, the horizontal pipe of the three-way pipe is equipped with a monitoring sensor 300, and the vertical pipe of the three-way pipe is equipped with a monitoring sensor 300. In this way, the monitoring sensor 300 fully covers the hydrogen-sensitive color-changing tape 200.

[0116] Figure 5 Schematic diagram of the structure of the 90° pipeline of the hydrogen filling station provided by Example 1 of the present invention is provided. Figure 5As shown, the hydrogen-sensitive color-changing tape 200 is attached to the connection of the three-way pipe, the horizontal pipe of the 90° pipe is attached with the hydrogen-sensitive color-changing tape 200, and the vertical pipe of the 90° pipe is also attached with the vertical tape. Correspondingly, the horizontal pipe of the 90° pipe is equipped with a monitoring sensor 300, and the vertical pipe of the 90° pipe is equipped with a monitoring sensor 300. In this way, the monitoring sensor 300 fully covers the hydrogen-sensitive color-changing tape 200.

[0117] Figure 6 Schematic diagram of the structure of a hydrogen leakage detection and alarm device installed on the surface of a hydrogen filling station equipment provided in Example 1 of the present invention. Figure 6 As shown, the hydrogen-sensitive color-changing tape 200 is attached to the hydrogen-facing equipment 400 , and the monitoring sensor 300 is assumed to be on the surface of the hydrogen-facing equipment 400 , fully covering the hydrogen-sensitive color-changing tape 200 .

[0118] Example 2

[0119] Figure 7 : is a flow chart of the hydrogen leak detection and alarm method provided by Example 2 of the present invention. Figure 2 As shown, the hydrogen leakage detection and alarm method provided in this embodiment includes the following steps:

[0120] S1. A hydrogen-sensitive color-changing tape 200 is affixed to the connection of the hydrogen pipeline. The hydrogen-sensitive color-changing tape 200 is used to sense the hydrogen leakage at the connection of the hydrogen pipeline, and changes color in response to the concentration of the leaked hydrogen to display a color signal;

[0121] S2 real-time monitoring of the hydrogen-sensitive color-changing tape 200, collecting the color signal of the hydrogen-sensitive color-changing tape 200, and converting the color signal into an electrical signal;

[0122] S3. Determine whether hydrogen leakage occurs according to the electrical signal, and calculate the risk level of hydrogen leakage when hydrogen leakage occurs;

[0123] S4. Execute alarm action according to the risk level of hydrogen leakage.

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

[0125] The determining whether hydrogen leakage occurs according to the electrical signal comprises:

[0126] The electrical 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 whether hydrogen leakage occurs is determined based on the comparison result.

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

[0128] When the comparison result is that the L value of the Lab detection value is smaller than the L value of the Lab standard value, the a value of the Lab detection value is smaller than the a value of the Lab standard value, the b value of the Lab detection value is smaller 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 smaller than the preset value, it is determined that hydrogen leakage has occurred.

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

[0130] Calculate the color change rate of the color signal of the hydrogen-sensitive color-changing tape 200 according to 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 according to the color change rate of the color signal of the hydrogen-sensitive color-changing tape 200.

[0132] In the embodiment of the present invention, the color change rate of the color signal of the hydrogen-sensitive color-changing tape 200 is calculated according to the Lab detection value of the color signal of the hydrogen-sensitive color-changing tape 200, including:

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

[0134] Calculate the color change rate of the a value in the Lab test value; and

[0135] Calculate the color change rate of the b value in the Lab test value.

[0136] In step S3, the risk level of hydrogen leakage is calculated according to the color change rate of the color signal of the hydrogen-sensitive color-changing tape 200, including:

[0137] The first risk coefficient is calculated according to the color change rate of the a value in the Lab test value and the first correction coefficient;

[0138] The second risk coefficient is calculated according to the color change rate of the a value in the Lab test value and the first correction coefficient;

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

[0140] Obtaining a final risk coefficient according to the first risk coefficient, the second risk coefficient and the third risk coefficient;

[0141] The risk level of hydrogen leakage is obtained according to the final risk factor.

[0142] Hydrogen leak detection methods include:

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

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

[0145] (3) collecting color information of the hydrogen-sensitive color-changing tape 200 in real time and converting it into an electrical signal for transmission through the monitoring sensor 300;

[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 operations (3) and (4);

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

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

[0149] The hydrogen leakage detection and alarm method of the present invention is applied to a hydrogen leakage detection and alarm device for implementation, and the hydrogen leakage detection and alarm device comprises:

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

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

[0152] A monitoring sensor 300 is used to monitor the hydrogen-sensitive color-changing tape 200, collect color signals of the hydrogen-sensitive color-changing tape 200, and convert the collected color signals into electrical signals;

[0153] a control module, used to determine whether hydrogen leakage occurs according to the electrical signal, and calculate the risk level of hydrogen leakage when hydrogen leakage occurs;

[0154] The alarm module is used to execute an alarm action according to the risk level of the hydrogen leakage.

[0155] Specifically, the hydrogen-sensitive color-changing adhesive is prepared using hydrogen-sensitive leakage detection materials so that it has the characteristic of color change response to hydrogen leakage. As the concentration of 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 using the Lab color space. Among them, the description using the Lab color space is that the L value in the Lab value before the color change is 60 to 80, the a value is -10 to 10, and the b value is -15 to 15; the L value in the Lab value after the color change is 30 to 60, the a value is -20 to 0, and the b value is -30 to 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 a 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 a Lab detection value described in the Lab color space, compare the Lab detection value with the Lab standard value, and determine 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 a 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 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 a 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 t 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.

[0162] 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.

[0163] When it is detected that hydrogen leakage has occurred, the control module is used 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-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 according to 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 color signal of the hydrogen-sensitive color-changing tape 200 according to 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 test value;

[0167] Calculate the color change rate of the a value in the Lab test value; and

[0168] Calculate the color change rate of the b value in the Lab test value.

[0169] By L'=(LL t ) / t to calculate the color change rate of the L value in the Lab test value.

[0170] By a'=(aa t ) / t to calculate the color change rate of the a value in the Lab test value.

[0171] By b'=(bb t ) / t to calculate the color change rate of the b value in the Lab test value.

[0172] Wherein L' is the color change rate of the L value in the Lab detection value, a' is the color change rate of the a value in the Lab detection value, and b' is the color change rate of the b value in the Lab detection value.

[0173] The risk level of hydrogen leakage is calculated according to 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 according to the color change rate of the color signal of the hydrogen-sensitive color-changing tape 200, including:

[0175] The first risk coefficient is calculated according to the color change rate of the a value in the Lab test value and the first correction coefficient;

[0176] The second risk coefficient is calculated according to the color change rate of the a value in the Lab test value and the first correction coefficient;

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

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

[0179] The final risk coefficient is obtained according to the first risk coefficient, the second risk coefficient and the third risk coefficient; specifically, the maximum value among the first risk quantity, the second risk coefficient and the third risk coefficient is selected as the final risk coefficient. That is, the final risk coefficient R L =max[L',m×a',n×b'], where R L is the final risk factor.

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

[0181] <![CDATA[R L Value]]> Risk Level ≤1 Low risk 1～3 Medium risk 3～5 High risk ≥5 Emergent Risk

[0182] The risk level of hydrogen leakage is obtained according to the final risk factor.

[0183] After the control module obtains the risk level of hydrogen leakage, the control module is used to send an alarm instruction corresponding to the risk level of hydrogen leakage to the alarm module, and the alarm module executes an alarm action according to the alarm instruction. Correspondingly, the alarm action is also graded. Firefighting actions of corresponding levels are executed according to the level of the alarm action.

[0184] Figure 2 is a schematic diagram of the structure of the monitoring sensor 300 provided in Example 1 of the present invention, such as Figure 2 As shown, in this embodiment, the monitoring sensor 300 includes a light source assembly 310, a photoelectric receiver 320 and a data repeater 340. The light source assembly 310 is used to illuminate the hydrogen-sensitive color-changing tape 200. The photoelectric receiver 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 photoelectric receiver 320 and send the electrical signal to the control module.

[0185] Specifically, the hydrogen-sensitive color-changing tape 200 is attached 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 adopts Figure 3 The hydrogen refueling station has a direct pipeline.

[0188] (1) A hydrogen-sensitive color-changing tape 200 is installed at the connection of the direct pipeline of the hydrogen filling 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, the L value before the color change is 75, the a value is 1.2, and the b value is 0.3; after the color change is complete, the L value is 42, the a value is -8.5, and the b value is -17.

[0189] (2) Install the cuboid monitoring sensor 300 on the hydrogen-sensitive color-changing tape 200 according to the characteristics of the tee joint of the straight-through pipeline;

[0190] (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;

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

[0192] During the time period specified in this embodiment, no hydrogen leakage occurred at the tee joint of the hydrogen straight-through pipeline in the hydrogen filling station.

[0193] Example 4

[0194] This embodiment uses the straight-through pipeline of the hydrogen filling station as Figure 3 described.

[0195] (1) Install a hydrogen-sensitive color-changing tape 200 at the connection of the straight-through pipeline of the hydrogen filling 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 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) Install the cuboid monitoring sensor 300 on the hydrogen-sensitive color-changing tape 200 according to the characteristics of the tee joint of the straight-through pipeline;

[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] According to the data, the risk level of hydrogen leakage is medium at this time. The operators of hydrogen refueling stations should strengthen inspections of leakage alarm points to avoid increasing the risk level of hydrogen leakage.

[0202] Example 5

[0203] This embodiment adopts Figure 4 The three-way pipeline of the hydrogenation station.

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

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

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

[0207] (4) The electrical signal of the color change of the hydrogen-sensitive color-changing tape 200 is compared with the standard color value; no hydrogen leakage occurs at the hydrogen three-way pipe connection of the hydrogen filling station within the time period specified in this embodiment.

[0208] Example 6

[0209] This embodiment adopts Figure 4 The three-way pipeline of the hydrogenation station.

[0210] (1) A hydrogen-sensitive color-changing tape 200 is installed at the three-way pipe connection of the hydrogen filling station. The hydrogen-sensitive color-changing tape 200 has a color-changing response characteristic to hydrogen leakage, changing from light color to dark blue. In the Lab color space, the L value before the color change is 67, the a value is -0.5, and the b value is 0.1; after the color change is complete, the L value is 45, the a value is -5.3, and the b value is -9.

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

[0212] (3) collecting color information of the hydrogen-sensitive color-changing tape 200 in real time and converting 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; detect 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, obtaining 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 risk level of hydrogen leakage is at a low risk level at this time. If the risk level remains basically unchanged, the original state can be maintained unchanged.

[0216] Example 7

[0217] This embodiment uses the 90° pipeline of the hydrogen refueling station as Figure 5 described.

[0218] (1) Install a hydrogen-sensitive color-changing tape 200 at the connection of the 90° pipeline 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 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.

[0219] (2) Install the right-angle monitoring sensor 300 on the hydrogen-sensitive color-changing tape 200 according to the characteristics of the 90° pipeline connection;

[0220] (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;

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

[0222] During the specified time period of this embodiment, no hydrogen leakage occurred at the connection of the hydrogen right-angle pipeline of the hydrogen refueling station.

[0223] Example 8

[0224] This embodiment uses the 90° pipeline of the hydrogen refueling station as Figure 5 described.

[0225] (1) Install a hydrogen-sensitive color-changing tape 200 at the 90° pipe 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. 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.

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

[0227] (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;

[0228] (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 = 49, a t = -6.3, b t = -14.5, satisfying "L t < L, a t < a, b t < 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 hydrogen leakage risk level 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 described.

[0233] (1) Install a hydrogen-sensitive color-changing tape 200 on the hydrogen-containing equipment 400 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. 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.

[0234] (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;

[0235] (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;

[0236] (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 in the hydrogen-containing equipment 400 of the hydrogen refueling station.

[0237] Embodiment 10

[0238] This embodiment uses the Figure 6 hydrogen-containing equipment 400 of the hydrogen refueling station as described.

[0239] (1) Install a hydrogen-sensitive color-changing tape 200 on the hydrogen-containing equipment 400 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.

[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; 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 risk level of hydrogen leakage and take interlock response operations according to the risk level. Referring to the data, at this time the hydrogen leakage risk level is medium risk, and the operators of the hydrogen refueling station should strengthen the inspection of the leakage alarm site to avoid the improvement of the hydrogen leakage risk level.

[0245] An embodiment of the present invention further provides a computer device, comprising: a memory, a processor, and a computer program, wherein the computer program is stored in the memory and is configured to be executed by the processor to implement the above-mentioned hydrogen leak detection and alarm method.

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

[0247] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes. The schemes in the embodiments of the present invention may be implemented in various computer languages, for example, object-oriented programming language Java and literal scripting language JavaScript, etc.

[0248] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0249] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0250] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0251] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0252] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A hydrogen leak detection and alarm device, It is characterized in that include: Hydrogen-sensitive color-changing tape is attached to the connection of hydrogen pipelines to sense hydrogen leakage at the connection of hydrogen pipelines, and changes color in response to the concentration of leaked hydrogen to display color signals; 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, used to determine whether hydrogen leakage occurs according to the electrical signal of the monitoring sensor, and when it is determined that hydrogen leakage occurs, calculate the risk level of hydrogen leakage; The alarm module is used to execute an alarm action according to the risk level of the hydrogen leakage.

2. The hydrogen leak detection and alarm device according to claim 1, It is characterized in that The color signal of the hydrogen-sensitive color-changing tape is described using the Lab color space.

3. The hydrogen leak detection and alarm device according to claim 1, It is characterized in that The monitoring sensor includes a light source component, a photoelectric receiver and a data repeater; 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 repeater is used for receiving the electrical signal sent from the photoelectric receiver and sending the electrical signal to the control module.

4. The hydrogen leak detection and alarm device according to claim 2, It is characterized in that The control module is specifically used to convert the electrical signal into a Lab detection value described in the Lab color space, compare the Lab detection value with the Lab standard value, and determine whether hydrogen leakage occurs according to the comparison result.

5. The hydrogen leak detection and alarm device according to claim 4, It is characterized in that The step of comparing the Lab detection value with the Lab standard value and determining whether hydrogen leakage occurs according to the comparison result includes: When the comparison result is that the L value of the Lab detection value is smaller than the L value of the Lab standard value, the a value of the Lab detection value is smaller than the a value of the Lab standard value, the b value of the Lab detection value is smaller 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 smaller than the preset value, it is determined that hydrogen leakage has occurred.

6. The hydrogen leak detection and alarm device according to claim 4, It is characterized in that When it is determined that a hydrogen leak occurs, the risk level of the hydrogen leak is calculated, including: Calculate the color change rate of the hydrogen-sensitive color-changing tape color signal according to the Lab detection value of the hydrogen-sensitive color-changing tape color signal; 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.

7. The hydrogen leak detection and alarm device according to claim 6, It is characterized in that The method of calculating the color change rate of the hydrogen-sensitive color-changing tape color signal according to the Lab detection value of the hydrogen-sensitive color-changing tape color signal comprises: Calculate the color change rate of the L value in the Lab test value; Calculate the color change rate of the a value in the Lab test value; and Calculate the color change rate of the b value in the Lab test value.

8. The hydrogen leak detection and alarm device according to claim 7, It is characterized in that The method of calculating the risk level of hydrogen leakage according to the color change rate of the color signal of the hydrogen-sensitive color-changing tape comprises: The first risk coefficient is calculated according to the color change rate of the a value in the Lab test value and the first correction coefficient; The second risk coefficient is calculated according to the color change rate of the a value in the Lab test value and the first correction coefficient; The color change rate of the L value in the Lab test value is used as the third risk factor; Obtaining a final risk coefficient according to the first risk coefficient, the second risk coefficient and the third risk coefficient; The risk level of hydrogen leakage is obtained according to the final risk factor.

9. A hydrogen leak detection and alarm method, It is characterized in that The method comprises: A hydrogen-sensitive color-changing tape is attached at the connection of the hydrogen pipeline, and the hydrogen-sensitive color-changing tape is used to sense the hydrogen leaked at the connection of the hydrogen pipeline, and changes color in response to the concentration of the leaked hydrogen to display a color signal; Real-time monitoring of the hydrogen-sensitive color-changing tape, collecting the color signal of the hydrogen-sensitive color-changing tape, and converting the collected color signal into an electrical signal; Determine whether hydrogen leakage occurs based on electrical signals; When it is determined that hydrogen leakage occurs, calculate the risk level of hydrogen leakage; Execute alarm actions according to the risk level of hydrogen leakage.

10. The hydrogen leak detection and alarm method according to claim 9, It is characterized in that The determining whether hydrogen leakage occurs according to the electrical signal comprises: 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 whether hydrogen leakage occurs is determined according to the comparison result, wherein the color signal is described in the Lab color space.

11. The hydrogen leak detection and alarm method according to claim 10, It is characterized in that The step of comparing the Lab detection value with the Lab standard value and determining whether hydrogen leakage occurs according to the comparison result includes: When the comparison result is that the L value of the Lab detection value is smaller than the L value of the Lab standard value, the a value of the Lab detection value is smaller than the a value of the Lab standard value, the b value of the Lab detection value is smaller 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 smaller than the preset value, it is determined that hydrogen leakage has occurred.

12. The hydrogen leak detection and alarm method according to claim 11, It is characterized in that When it is determined that a hydrogen leak occurs, the risk level of the hydrogen leak is calculated, including: Calculate the color change rate of the hydrogen-sensitive color-changing tape color signal according to the Lab detection value of the hydrogen-sensitive color-changing tape color signal; 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.

13. The hydrogen leak detection and alarm method according to claim 12, It is characterized in that The method of calculating the color change rate of the hydrogen-sensitive color-changing tape color signal according to the Lab detection value of the hydrogen-sensitive color-changing tape color signal comprises: Calculate the color change rate of the L value in the Lab test value; Calculate the color change rate of the a value in the Lab test value; and Calculate the color change rate of the b value in the Lab test value.

14. The hydrogen leak detection and alarm method according to claim 13, It is characterized in that The method of calculating the risk level of hydrogen leakage according to the color change rate of the color signal of the hydrogen-sensitive color-changing tape comprises: The first risk coefficient is calculated according to the color change rate of the a value in the Lab test value and the first correction coefficient; The second risk coefficient is calculated according to the color change rate of the a value in the Lab test value and the first correction coefficient; The color change rate of the L value in the Lab test value is used as the third risk factor; Obtaining a final risk coefficient according to the first risk coefficient, the second risk coefficient and the third risk coefficient; The risk level of hydrogen leakage is obtained according to the final risk factor.

15. A computer device, It is characterized in that include: Memory; processor; as well as Computer programs; Wherein, the computer program is stored in a memory and is configured to be executed by a processor to implement the hydrogen leak detection and alarm method according to any one of claims 9 to 14.

16. A computer-readable storage medium having a computer program stored thereon, It is characterized in that The computer program is executed by a processor to implement the hydrogen leak detection and alarm method according to any one of claims 9 to 14.

Images