Hydrogen leakage detection system and method, computer equipment and readable storage medium

Abstract

The invention provides a hydrogen leakage detection system and method, computer equipment and a readable storage medium, and belongs to the field of hydrogen leakage detection. The hydrogen leakage detection system comprises a hydrogen-sensitive color-changing adhesive tape which is attached to the joint of the hydrogen pipeline and used for sensing hydrogen leaked from the joint of the hydrogen pipeline; the hydrogen-sensitive color-changing sensing mechanism is used for monitoring the hydrogen-sensitive color-changing adhesive tape and converting a collected color signal into an electrical signal; the compact optical path is used for increasing the effective monitoring area of the hydrogen-sensitive color-changing sensing mechanism; the distance judgment module is used for judging whether the distance between the hydrogen-sensitive color-changing adhesive tape and the hydrogen-sensitive color-changing sensing mechanism is smaller than a preset distance value or not; and the control module is used for judging whether hydrogen leakage occurs or not according to the electrical signal output by the hydrogen-sensitive color-changing sensing mechanism.

Description

Technical Field

[0001] The present invention relates to the technical field of hydrogen leakage detection, and in particular to a hydrogen leakage detection system, a hydrogen leakage detection 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] The existing technology monitors hydrogen leaks through manual inspections or the installation of hydrogen leak detection alarms. However, it is not easy to carry out manual inspections or manual inspections are difficult to detect in narrow spaces such as hydrogen pipelines, hydrogen-blended natural gas pipelines, and hydrogen storage wells. It is also not easy to install hydrogen leak detection alarms, making it difficult to detect and locate hydrogen leaks in a timely manner. Summary of the invention

[0004] In order to solve the above technical defects, the present invention provides a hydrogen leak detection system, method, computer equipment and readable storage medium. The hydrogen leak detection system attaches a hydrogen-sensitive color-changing tape to a place where hydrogen is likely to leak, and monitors whether there is a hydrogen leak by collecting the color signal of the hydrogen-sensitive color-changing tape. The hydrogen-sensitive color-changing tape can be installed in a small space, and the compact optical path can increase the effective monitoring area of ​​the hydrogen-sensitive color change.

[0005] A first aspect of the present invention provides a hydrogen leak detection system, comprising:

[0006] 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;

[0007] A hydrogen-sensitive color-changing sensor mechanism 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;

[0008] Compact optical pathways to increase the effective monitoring area of ​​the hydrogen-sensitive color-changing sensing mechanism;

[0009] A distance judgment module is used to judge whether the distance between the hydrogen-sensitive color-changing tape and the hydrogen-sensitive color-changing sensor mechanism is less than a preset distance value;

[0010] A control module, used to determine whether hydrogen leakage occurs according to the electrical signal output by the hydrogen-sensitive color-changing sensor mechanism;

[0011] The hydrogen-sensitive color-changing sensor mechanism has a detachably installed compact optical pathway therein, and the compact optical pathway is installed in the hydrogen-sensitive color-changing sensor mechanism when the distance judgment module determines that the distance between the hydrogen-sensitive color-changing tape and the hydrogen-sensitive color-changing sensor mechanism is less than a preset distance value.

[0012] In the embodiment of the present invention, the hydrogen-sensitive color-changing sensor mechanism comprises: a light source component, an RGB photoelectric sensor, a convex lens and a concave lens;

[0013] The light source assembly is used to irradiate the hydrogen-sensitive color-changing tape;

[0014] The concave lens is arranged between the light source assembly and the hydrogen-sensitive color-changing tape;

[0015] The RGB photoelectric sensor is arranged above the hydrogen-sensitive color-changing tape, and is used to collect the color signal of the hydrogen-sensitive color-changing tape, and convert the collected color signal into an electrical signal, and analyze the electrical signal to obtain the color R value, G value and B value;

[0016] The convex lens is arranged between the RGB photoelectric sensor and the hydrogen-sensitive color-changing tape.

[0017] In an embodiment of the present invention, the compact optical path includes multiple total reflection mirrors, and the angles of the total reflection mirrors are adjustable. By adjusting the angles of the total reflection mirrors, the light path emitted by the light source assembly is vertically irradiated on the hydrogen-sensitive color-changing tape, thereby increasing the effective light irradiation area on the hydrogen-sensitive color-changing tape.

[0018] In the embodiment of the present invention, the distance between the hydrogen-sensitive color-changing tape and the hydrogen-sensitive color-changing sensing mechanism includes:

[0019] The first distance is the distance between the light source assembly and the concave lens;

[0020] The second distance is the distance between the concave lens and the hydrogen-sensitive color-changing tape;

[0021] The third distance is the distance between the hydrogen-sensitive color-changing tape and the convex lens;

[0022] The fourth distance is the distance between the convex lens and the RGB photoelectric sensor.

[0023] In the embodiment of the present invention, the distance determination module is specifically used for:

[0024] It is determined whether the sum of the first distance and the second distance is less than the first preset distance value, or it is determined whether the sum of the third distance and the fourth distance is less than the second preset distance value.

[0025] In an embodiment of the present invention, when the sum of the first distance and the second distance is less than the first preset distance value and the sum of the third distance and the fourth distance is greater than the second preset distance value, the compact optical pathway is installed between the light source assembly and the concave lens or between the concave lens and the hydrogen-sensitive color-changing tape;

[0026] When the sum of the first distance and the second distance is greater than the first preset distance value and the sum of the third distance and the fourth distance is less than the second preset distance value, the compact optical pathway is installed between the hydrogen-sensitive color-changing tape and the convex lens or between the convex lens and the RGB photoelectric sensor;

[0027] When the sum of the first distance and the second distance is less than the first preset distance value and the sum of the third distance and the fourth distance is less than the second preset distance value, the compact optical pathway is installed between the light source assembly and the concave lens or between the concave lens and the hydrogen-sensitive color-changing tape, and the compact optical pathway is located between the hydrogen-sensitive color-changing tape and the convex lens or between the convex lens and the RGB photoelectric sensor.

[0028] In the embodiment of the present invention, the control module is specifically used to determine whether hydrogen leakage occurs according to the R value, G value and B value obtained by analyzing the RGB photoelectric sensor.

[0029] In an embodiment of the present invention, judging whether hydrogen leakage occurs according to the R value, G value, and B value obtained by analyzing the RGB photoelectric sensor includes:

[0030] Obtaining the initial R value, initial G value and initial B value of the hydrogen-sensitive color-changing tape at the initial moment;

[0031] Collect the detection R value, detection G value and detection B value of the hydrogen-sensitive color-changing tape after a preset time period;

[0032] Obtain a changed R value according to the initial R value and the detected R value, obtain a changed G value according to the initial G value and the detected G value, and obtain a changed B value according to the initial B value and the detected B value;

[0033] Determine whether the change R value exceeds the first preset threshold, whether the change G value exceeds the second preset threshold, or whether the change B value exceeds the third preset threshold; if so, determine that hydrogen leakage occurs.

[0034] In an embodiment of the present invention, the hydrogen leakage detection system further includes an alarm module, and the alarm module is used to calculate the risk level of hydrogen leakage when hydrogen leakage occurs, and perform an alarm action according to the risk level of hydrogen leakage.

[0035] In an embodiment of the present invention, the calculating the risk level of hydrogen leakage includes:

[0036] Calculate the R value discoloration rate of the hydrogen-sensitive discoloration tape according to the changed R value;

[0037] Calculate the G value color change rate of the hydrogen-sensitive color-changing tape according to the changed G value;

[0038] Calculate the B value discoloration rate of the hydrogen-sensitive discoloration tape according to the changed B value;

[0039] The risk level of hydrogen leakage is obtained according to the R value color change rate, G value color change rate or B value color change rate of the hydrogen-sensitive color-changing tape.

[0040] A second aspect of the present invention provides a hydrogen leakage detection method, the method comprising:

[0041] 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;

[0042] Installing a hydrogen-sensitive color-changing sensor mechanism, calculating the distance between the hydrogen-sensitive color-changing tape and the hydrogen-sensitive color-changing sensor mechanism, determining whether the distance between the hydrogen-sensitive color-changing tape and the hydrogen-sensitive color-changing sensor mechanism is less than a preset distance value, and if so, installing the compact optical path in the hydrogen-sensitive color-changing sensor mechanism;

[0043] 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;

[0044] Determine whether hydrogen leakage occurs based on the electrical signal.

[0045] In an embodiment of the present invention, the method further includes:

[0046] When it is determined that hydrogen leakage occurs, calculate the risk level of hydrogen leakage;

[0047] Execute alarm actions according to the risk level of hydrogen leakage.

[0048] A third aspect of the present invention provides a computer device, comprising:

[0049] Memory;

[0050] Processor; and

[0051] Computer programs;

[0052] The computer program is stored in a memory and is configured to be executed by a processor to implement the hydrogen leak detection method as described above.

[0053] 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 method as described above.

[0054] The hydrogen leak detection system attaches hydrogen-sensitive color-changing tape to places where hydrogen is likely to leak, and monitors whether there is hydrogen leakage by collecting the color signal of the hydrogen-sensitive color-changing tape. The hydrogen-sensitive color-changing tape can be installed in a small space, and the compact optical path can increase the effective monitoring area of ​​the hydrogen-sensitive color-changing tape.

[0055] 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

[0056] 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:

[0057] Figure 1 is a schematic structural diagram of a hydrogen leakage detection system provided in Example 1 of the present invention;

[0058] Figure 2 is a schematic structural diagram of a hydrogen-sensitive color-changing sensor mechanism provided in Example 1 of the present invention;

[0059] Figure 3 It is a schematic structural diagram of a hydrogen-sensitive color-changing sensor mechanism provided in Example 1 of the present invention and equipped with a compact optical path;

[0060] Figure 4 This is a flow chart of the hydrogen leakage detection method provided in Example 2 of the present invention.

[0061] Description of Reference Numerals

[0062] 110 - light source assembly, 120 - concave lens, 130 - convex lens, 140 - RGB photoelectric sensor, 150 - electrical signal transmission line, 160 - compact optical pathway, 161 - total reflection mirror, 200 - hydrogen-sensitive color-changing tape. DETAILED DESCRIPTION

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] In the process of realizing the present invention, the inventors found that the prior art monitors hydrogen leakage through manual inspections or the installation of hydrogen leakage detection alarms. However, for scenarios such as hydrogen transmission pipelines, hydrogen-blended natural gas pipelines, hydrogen storage wells and other small spaces, it is not easy to carry out manual inspections or manual inspections are difficult to detect, and it is not easy to install hydrogen leakage detection alarms, making it difficult to detect and locate hydrogen leakage in a timely manner.

[0068] In view of the above problems, a hydrogen leakage detection system is provided in an embodiment of the present invention, characterized in that it includes: a hydrogen-sensitive color-changing tape, which is attached to the connection of the hydrogen pipeline, used to sense the hydrogen leaked at the connection of the hydrogen pipeline, and changes color according to the concentration of the leaked hydrogen to display a color signal; a hydrogen-sensitive color-changing sensor mechanism, 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 compact optical path, which is used to increase the effective monitoring area of ​​the hydrogen-sensitive color-changing sensor mechanism; a distance judgment module, which is used to judge whether the distance between the hydrogen-sensitive color-changing tape and the hydrogen-sensitive color-changing sensor mechanism is less than a preset distance value; a control module, which is used to judge whether hydrogen leakage occurs according to the electrical signal output by the hydrogen-sensitive color-changing sensor mechanism. The hydrogen-sensitive color-changing sensor mechanism has a detachably installed compact optical path, and the compact optical path is installed in the hydrogen-sensitive color-changing sensor mechanism when the distance judgment module judges that the distance between the hydrogen-sensitive color-changing tape and the hydrogen-sensitive color-changing sensor mechanism is less than the preset distance value. The hydrogen leak detection system attaches hydrogen-sensitive color-changing tape to places where hydrogen is likely to leak, and monitors whether there is hydrogen leakage by collecting the color signal of the hydrogen-sensitive color-changing tape. The hydrogen-sensitive color-changing tape can be installed in a small space, and the compact optical path can increase the effective monitoring area of ​​the hydrogen-sensitive color-changing tape.

[0069] Example 1

[0070] Figure 1 Schematic diagram of the structure of the hydrogen leakage detection system provided by the embodiment of the present invention. Figure 1 As shown, this embodiment provides a hydrogen leak detection system, comprising:

[0071] The hydrogen-sensitive color-changing tape 200 is attached to the connection of the hydrogen pipeline 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;

[0072] A hydrogen-sensitive color-changing sensor mechanism, 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;

[0073] A compact optical pathway 160 for increasing the effective monitoring area of ​​the hydrogen sensitive color change sensing mechanism;

[0074] A distance judgment module, used to judge whether the distance between the hydrogen-sensitive color-changing tape 200 and the hydrogen-sensitive color-changing sensor mechanism is less than a preset distance value compact optical path 160;

[0075] A control module, used to determine whether hydrogen leakage occurs according to the electrical signal output by the hydrogen-sensitive color-changing sensor mechanism;

[0076] The hydrogen-sensitive color-changing sensor mechanism has a detachably installed compact optical pathway 160, and the compact optical pathway 160 is installed in the hydrogen-sensitive color-changing sensor mechanism when the distance judgment module determines that the distance between the hydrogen-sensitive color-changing tape 200 and the hydrogen-sensitive color-changing sensor mechanism is less than a preset distance value.

[0077] Specifically, the hydrogen-sensitive color-changing tape 200 is made of a hydrogen-sensitive leakage detection material so that it has a color-changing response characteristic to hydrogen leakage. As the concentration of leaked hydrogen increases, the hydrogen-sensitive color-changing tape 200 changes from light blue to dark blue.

[0078] When there is no need to install the compact optical pathway 160 in the hydrogen-sensitive color-changing sensing mechanism, the color signal of the hydrogen-sensitive color-changing tape 200 is collected through the hydrogen-sensitive color-changing sensing mechanism; when there is a need to install the compact optical pathway 160 in the hydrogen-sensitive color-changing sensing mechanism, the compact optical pathway 160 is installed in the hydrogen-sensitive color-changing sensing mechanism to form a compact hydrogen-sensitive color-changing sensing mechanism, and the color signal of the hydrogen-sensitive color-changing tape 200 is collected through the compact hydrogen-sensitive color-changing sensing mechanism.

[0079] In this embodiment, Figure 2 Schematic diagram of the structure of the hydrogen-sensitive color-changing sensor mechanism provided in Example 1 of the present invention. Figure 2 As shown, the hydrogen-sensitive color change sensing mechanism includes: a light source assembly 110, an RGB photoelectric sensor 140, a convex lens 130 and a concave lens 120;

[0080] The light source assembly 110 is used to illuminate the hydrogen-sensitive color-changing tape 200;

[0081] The concave lens 120 is disposed between the light source assembly 110 and the hydrogen-sensitive color-changing tape 200 ; the concave lens 120 is used to diverge the light path generated by the light source assembly 110 .

[0082] The RGB photoelectric sensor 140 is disposed above the hydrogen-sensitive color-changing tape 200, and 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, and analyze the electrical signal to obtain the color R value, G value and B value;

[0083] The convex lens 130 is disposed between the RGB photoelectric sensor 140 and the hydrogen-sensitive color-changing tape 200 . The convex lens 130 is used to gather the light path reflected by the hydrogen-sensitive color-changing tape 200 so that the light can be collected by the RGB photoelectric sensor 140 .

[0084] For hydrogen pipelines, hydrogen-blended natural gas pipelines, hydrogen storage wells and other scenarios, it is required that the protruding height of the hydrogen-sensitive color-changing sensor components should be ≤2cm after installation, so as to facilitate the subsequent application of anti-corrosion coatings. If the hydrogen-sensitive color-changing sensor components are too close to the hydrogen-sensitive color-changing functional tape, the effective detection area will be greatly reduced.

[0085] In this embodiment, Figure 3 Schematic diagram of the structure of a hydrogen-sensitive color-changing sensor mechanism provided in Example 1 of the present invention with a compact optical path installed. Figure 3 As shown, the compact optical path 160 includes a plurality of total reflection mirrors 161, the angles of which can be flexibly adjusted. By adjusting the angles of the total reflection mirrors, the light path emitted by the light source assembly 110 is vertically irradiated on the hydrogen-sensitive color-changing tape 200, thereby increasing the effective light irradiation area on the hydrogen-sensitive color-changing tape 200. The total reflection mirrors 161 can allow the light path generated by the light source assembly 110 to irradiate a larger area on the hydrogen-sensitive color-changing tape 200, and can allow the color signal reflected on the hydrogen-sensitive color-changing tape 200 to be received by the RGB photoelectric sensor 140 in a larger range.

[0086] In this embodiment, the distance between the hydrogen-sensitive color-changing tape 200 and the hydrogen-sensitive color-changing sensor mechanism includes:

[0087] The first distance is the distance between the light source assembly 110 and the concave lens 120;

[0088] The second distance is the distance between the concave lens 120 and the hydrogen-sensitive color-changing tape 200;

[0089] The third distance is the distance between the hydrogen-sensitive color-changing tape 200 and the convex lens 130;

[0090] The fourth distance is the distance between the convex lens 130 and the RGB photoelectric sensor 140 .

[0091] In this embodiment, the distance determination module is specifically used for:

[0092] It is determined whether the sum of the first distance and the second distance is less than the first preset distance value, or it is determined whether the sum of the third distance and the fourth distance is less than the second preset distance value.

[0093] In this embodiment, judging whether the compact optical path 160 needs to be installed in the hydrogen-sensitive color-changing sensor mechanism according to the distance between the hydrogen-sensitive color-changing tape 200 and the hydrogen-sensitive color-changing sensor mechanism includes:

[0094] When the sum of the first distance and the second distance is less than or equal to the first preset distance value or the sum of the third distance and the fourth distance is less than or equal to the second preset distance value, the compact optical pathway 160 is installed in the hydrogen-sensitive color-changing sensor mechanism.

[0095] Specifically, the compact optical path 160 is installed in the hydrogen-sensitive color change sensing mechanism, including:

[0096] When the sum of the first distance and the second distance is less than or equal to the first preset distance value but the sum of the third distance and the fourth distance is greater than the second preset distance value, the compact optical pathway 160 is installed between the light source assembly 110 and the concave lens 120 or the compact optical pathway 160 is installed between the concave lens 120 and the hydrogen-sensitive color-changing tape 200;

[0097] When the sum of the first distance and the second distance is greater than the first preset distance value but the sum of the third distance and the fourth distance is less than or equal to the second preset distance value, the compact optical pathway 160 is installed between the hydrogen-sensitive color-changing tape 200 and the convex lens 130 or the compact optical pathway 160 is installed between the convex lens 130 and the RGB photoelectric sensor 140;

[0098] When the sum of the first distance and the second distance is less than or equal to the first preset distance value and the sum of the third distance and the fourth distance is less than or equal to the second preset distance value, the compact optical pathway 160 is installed between the light source assembly 110 and the concave lens 120 or the compact optical pathway 160 is installed between the concave lens 120 and the hydrogen-sensitive color-changing tape 200 and the compact optical pathway 160 is installed between the hydrogen-sensitive color-changing tape 200 and the convex lens 130 or the compact optical pathway 160 is installed between the convex lens 130 and the RGB photoelectric sensor 140.

[0099] In this embodiment, the first preset distance value and the second preset distance value are both 100 mm.

[0100] When it is not necessary to install the compact optical pathway 160 in the hydrogen-sensitive color-changing sensing mechanism, the color signal of the hydrogen-sensitive color-changing tape 200 is collected through the hydrogen-sensitive color-changing sensing mechanism, and the color signal of the hydrogen-sensitive color-changing tape 200 is collected through the RGB photoelectric sensor 140, and converted into R value, G value and B value; when it is necessary to install the compact optical pathway 160 in the hydrogen-sensitive color-changing sensing mechanism, the compact optical pathway 160 is installed in the hydrogen-sensitive color-changing sensing mechanism to form a compact hydrogen-sensitive color-changing sensing mechanism, the color signal of the hydrogen-sensitive color-changing tape 200 is collected through the compact hydrogen-sensitive color-changing sensing mechanism, and the color signal of the hydrogen-sensitive color-changing tape 200 is collected through the RGB photoelectric sensor 140, and converted into R value, G value and B value, and the R value, G value and B value are transmitted to the control module through the electrical signal transmission line 150.

[0101] In this embodiment, the control module is specifically used to determine whether hydrogen leakage occurs according to the R value, G value and B value obtained by analyzing the RGB photoelectric sensor.

[0102] In this embodiment, judging whether hydrogen leakage occurs according to the R value, G value and B value obtained by the RGB photoelectric sensor includes:

[0103] Obtaining an initial R value, an initial G value, and an initial B value of the hydrogen-sensitive color-changing tape 200 at an initial moment;

[0104] Collecting the detection R value, detection G value and detection B value of the hydrogen-sensitive color-changing tape 200 after a preset time period;

[0105] Obtain a changed R value according to the initial R value and the detected R value, obtain a changed G value according to the initial G value and the detected G value, and obtain a changed B value according to the initial B value and the detected B value;

[0106] Determine whether the change R value exceeds the first preset threshold, whether the change G value exceeds the second preset threshold, or whether the change B value exceeds the third preset threshold; if so, determine that hydrogen leakage occurs.

[0107] In this embodiment, the first preset threshold, the second preset threshold and the third preset threshold are all positive numbers.

[0108] Right now:

[0109] R t0 -R t0+t >m or G t0 -G t0+t >n

[0110] Among them, R t0 and G t0 are the initial R value and initial G value of the hydrogen-sensitive color-changing tape 200 at time t0 (initial time), R t0+t and G t0+t It is the detection R value and detection G value of the hydrogen-sensitive color-changing tape 200 after t time (preset time period). In order to ensure the effectiveness of the alarm and avoid false alarms, t can usually be 0.1s, 0.2s, 0.3s, 0.4s, ..., 1.8s, 1.9s, 2.0s. The m and n values ​​are the color change judgment threshold points (m is the first preset threshold, n is the second preset threshold), and both are positive numbers.

[0111] In an embodiment of the present invention, the hydrogen leakage detection system further includes an alarm module, and the alarm module is used to calculate the risk level of hydrogen leakage when hydrogen leakage occurs, and perform an alarm action according to the risk level of hydrogen leakage.

[0112] In this embodiment, the calculation of the risk level of hydrogen leakage includes:

[0113] Calculate the R value discoloration rate of the hydrogen-sensitive color-changing tape 200 according to the changed R value;

[0114] Calculate the G value color change rate of the hydrogen-sensitive color-changing tape 200 according to the changed G value;

[0115] Calculate the B value color change rate of the hydrogen-sensitive color-changing tape 200 according to the changed B value;

[0116] The risk level of hydrogen leakage is obtained according to the R value color change rate, the G value color change rate or the B value color change rate of the hydrogen-sensitive color-changing tape 200.

[0117] The calculation formula of R value color change rate is:

[0118] R RL =(R t0 -R t0+t ) / t;

[0119] Similarly: The calculation formula for the G value color change rate is:

[0120] G RL =(G t0 -G t0+t ) / t.

[0121] The risk level of hydrogen leakage can be obtained according to one of the R value color change rate, G value color change rate or B value color change rate of the hydrogen sensitive color changing tape 200. Specifically, the R value color change rate, G value color change rate or B value color change rate respectively correspond to three risk level tables, and the risk level corresponding to the color change rate obtained by querying and calculating the risk table.

[0122] As shown in Table 1 and Table 2, Table 1 is a table of risk levels corresponding to the R value color change rate, and Table 2 is a table of risk levels corresponding to the G value color change rate.

[0123] Table 1: Risk level table corresponding to the R value discoloration rate

[0124] <![CDATA[R RL Value]]> Risk Level ≤10 Low risk 10～30 Medium risk 30～40 High risk ≥40 Emergent Risk

[0125] Table 2: Risk level table corresponding to the G value color change rate

[0126]

[0127]

[0128] In this embodiment, a corresponding alarm action is executed according to the risk level obtained by the query.

[0129] When hydrogen leakage is confirmed, the control module transmits the hydrogen leakage alarm information and hydrogen leakage risk level signal to the central control system, and the central control system takes corresponding interlocking measures. When the risk is low or medium, the risk level change should be continuously tracked. If the risk level remains basically unchanged, the original state can be maintained unchanged; if it is a medium risk, the hydrogen scene operator should strengthen the inspection of the leakage alarm point; if it is a high risk, the hydrogen leakage point should be cut off from the hydrogen system as much as possible, and corresponding pressure relief and treatment measures should be taken to avoid further expansion of hydrogen leakage; if it is an emergency risk, emergency parking should be taken immediately, and the corresponding hydrogen supply should be cut off. The residual hydrogen in the hydrogen system should be discharged through the emergency relief outlet as soon as possible.

[0130] Example 2

[0131] Figure 4 : is a flow chart of the hydrogen leakage detection method provided by Example 2 of the present invention. Figure 4 As shown, the hydrogen leakage detection method provided in this embodiment includes the following steps:

[0132] 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 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;

[0133] S2. Install a hydrogen-sensitive color-changing sensor mechanism, calculate the distance between the hydrogen-sensitive color-changing tape and the hydrogen-sensitive color-changing sensor mechanism, determine whether the distance between the hydrogen-sensitive color-changing tape and the hydrogen-sensitive color-changing sensor mechanism is less than a preset distance value, and if so, install the compact optical path in the hydrogen-sensitive color-changing sensor mechanism;

[0134] S3 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 collected color signal into an electrical signal;

[0135] S4. Determine whether hydrogen leakage occurs based on the electrical signal.

[0136] In an embodiment, the method further comprises:

[0137] S5. When it is determined that a hydrogen leak has occurred, calculate the risk level of the hydrogen leak;

[0138] S6. Execute alarm action according to the risk level of hydrogen leakage.

[0139] The method is implemented by applying a hydrogen leakage detection system, and the hydrogen leakage detection system comprises:

[0140] The hydrogen-sensitive color-changing tape 200 is attached to the connection of the hydrogen pipeline 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;

[0141] A hydrogen-sensitive color-changing sensor mechanism, 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;

[0142] A compact optical pathway 160 for increasing the effective monitoring area of ​​the hydrogen sensitive color change sensing mechanism;

[0143] A distance judgment module, used to judge whether the distance between the hydrogen-sensitive color-changing tape 200 and the hydrogen-sensitive color-changing sensor mechanism is less than a preset distance value compact optical path 160;

[0144] A control module, used to determine whether hydrogen leakage occurs according to the electrical signal output by the hydrogen-sensitive color-changing sensor mechanism;

[0145] The hydrogen-sensitive color-changing sensor mechanism has a detachably installed compact optical pathway 160, and the compact optical pathway 160 is installed in the hydrogen-sensitive color-changing sensor mechanism when the distance judgment module determines that the distance between the hydrogen-sensitive color-changing tape 200 and the hydrogen-sensitive color-changing sensor mechanism is less than a preset distance value.

[0146] Specifically, the hydrogen-sensitive color-changing tape 200 is made of a hydrogen-sensitive leakage detection material so that it has a color-changing response characteristic to hydrogen leakage. As the concentration of leaked hydrogen increases, the hydrogen-sensitive color-changing tape 200 changes from light blue to dark blue.

[0147] When there is no need to install the compact optical pathway 160 in the hydrogen-sensitive color-changing sensing mechanism, the color signal of the hydrogen-sensitive color-changing tape 200 is collected through the hydrogen-sensitive color-changing sensing mechanism; when there is a need to install the compact optical pathway 160 in the hydrogen-sensitive color-changing sensing mechanism, the compact optical pathway 160 is installed in the hydrogen-sensitive color-changing sensing mechanism to form a compact hydrogen-sensitive color-changing sensing mechanism, and the color signal of the hydrogen-sensitive color-changing tape 200 is collected through the compact hydrogen-sensitive color-changing sensing mechanism.

[0148] In this embodiment, Figure 2 As shown, the hydrogen-sensitive color change sensing mechanism includes: a light source assembly 110, an RGB photoelectric sensor 140, a convex lens 130 and a concave lens 120;

[0149] The light source assembly 110 is used to illuminate the hydrogen-sensitive color-changing tape 200;

[0150] The concave lens 120 is disposed between the light source assembly 110 and the hydrogen-sensitive color-changing tape 200 ; the concave lens 120 is used to diverge the light path generated by the light source assembly 110 .

[0151] The RGB photoelectric sensor 140 is disposed above the hydrogen-sensitive color-changing tape 200, and 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, and analyze the electrical signal to obtain the color R value, G value and B value;

[0152] The convex lens 130 is disposed between the RGB photoelectric sensor 140 and the hydrogen-sensitive color-changing tape 200 . The convex lens 130 is used to gather the light path reflected by the hydrogen-sensitive color-changing tape 200 so that the light can be collected by the RGB photoelectric sensor 140 .

[0153] For hydrogen pipelines, hydrogen-blended natural gas pipelines, hydrogen storage wells and other scenarios, it is required that the protruding height of the hydrogen-sensitive color-changing sensor components should be ≤2cm after installation, so as to facilitate the subsequent application of anti-corrosion coatings. If the hydrogen-sensitive color-changing sensor components are too close to the hydrogen-sensitive color-changing functional tape, the effective detection area will be greatly reduced.

[0154] In this embodiment, if Figure 3 As shown, the compact optical path 160 includes a plurality of total reflection mirrors 161, the angles of which can be flexibly adjusted. By adjusting the angles of the total reflection mirrors, the light path emitted by the light source assembly 110 is vertically irradiated on the hydrogen-sensitive color-changing tape 200, thereby increasing the effective light irradiation area on the hydrogen-sensitive color-changing tape 200. The total reflection mirrors 161 can allow the light path generated by the light source assembly 110 to irradiate a larger area on the hydrogen-sensitive color-changing tape 200, and can allow the color signal reflected on the hydrogen-sensitive color-changing tape 200 to be received by the RGB photoelectric sensor 140 in a larger range.

[0155] In this embodiment, the distance between the hydrogen-sensitive color-changing tape 200 and the hydrogen-sensitive color-changing sensor mechanism includes:

[0156] The first distance is the distance between the light source assembly 110 and the concave lens 120;

[0157] The second distance is the distance between the concave lens 120 and the hydrogen-sensitive color-changing tape 200;

[0158] The third distance is the distance between the hydrogen-sensitive color-changing tape 200 and the convex lens 130;

[0159] The fourth distance is the distance between the convex lens 130 and the RGB photoelectric sensor 140 .

[0160] In this embodiment, the distance determination module is specifically used for:

[0161] It is determined whether the sum of the first distance and the second distance is less than the first preset distance value, or it is determined whether the sum of the third distance and the fourth distance is less than the second preset distance value.

[0162] In this embodiment, judging whether the compact optical path 160 needs to be installed in the hydrogen-sensitive color-changing sensor mechanism according to the distance between the hydrogen-sensitive color-changing tape 200 and the hydrogen-sensitive color-changing sensor mechanism includes:

[0163] When the sum of the first distance and the second distance is less than or equal to the first preset distance value or the sum of the third distance and the fourth distance is less than or equal to the second preset distance value, the compact optical pathway 160 is installed in the hydrogen-sensitive color-changing sensor mechanism.

[0164] Specifically, the compact optical path 160 is installed in the hydrogen-sensitive color change sensing mechanism, including:

[0165] When the sum of the first distance and the second distance is less than or equal to the first preset distance value but the sum of the third distance and the fourth distance is greater than the second preset distance value, the compact optical pathway 160 is installed between the light source assembly 110 and the concave lens 120 or the compact optical pathway 160 is installed between the concave lens 120 and the hydrogen-sensitive color-changing tape 200;

[0166] When the sum of the first distance and the second distance is greater than the first preset distance value but the sum of the third distance and the fourth distance is less than or equal to the second preset distance value, the compact optical pathway 160 is installed between the hydrogen-sensitive color-changing tape 200 and the convex lens 130 or the compact optical pathway 160 is installed between the convex lens 130 and the RGB photoelectric sensor 140;

[0167] When the sum of the first distance and the second distance is less than or equal to the first preset distance value and the sum of the third distance and the fourth distance is less than or equal to the second preset distance value, the compact optical pathway 160 is installed between the light source assembly 110 and the concave lens 120 or the compact optical pathway 160 is installed between the concave lens 120 and the hydrogen-sensitive color-changing tape 200 and the compact optical pathway 160 is installed between the hydrogen-sensitive color-changing tape 200 and the convex lens 130 or the compact optical pathway 160 is installed between the convex lens 130 and the RGB photoelectric sensor 140.

[0168] In this embodiment, the first preset distance value and the second preset distance value are both 100 mm.

[0169] When it is not necessary to install the compact optical pathway 160 in the hydrogen-sensitive color-changing sensing mechanism, the color signal of the hydrogen-sensitive color-changing tape 200 is collected through the hydrogen-sensitive color-changing sensing mechanism, and the color signal of the hydrogen-sensitive color-changing tape 200 is collected through the RGB photoelectric sensor 140, and converted into R value, G value and B value; when it is necessary to install the compact optical pathway 160 in the hydrogen-sensitive color-changing sensing mechanism, the compact optical pathway 160 is installed in the hydrogen-sensitive color-changing sensing mechanism to form a compact hydrogen-sensitive color-changing sensing mechanism, the color signal of the hydrogen-sensitive color-changing tape 200 is collected through the compact hydrogen-sensitive color-changing sensing mechanism, and the color signal of the hydrogen-sensitive color-changing tape 200 is collected through the RGB photoelectric sensor 140, and converted into R value, G value and B value, and the R value, G value and B value are transmitted to the control module through the electrical signal transmission line 150.

[0170] In this embodiment, the control module is specifically used to determine whether hydrogen leakage occurs according to the R value, G value and B value obtained by analyzing the RGB photoelectric sensor.

[0171] In this embodiment, judging whether hydrogen leakage occurs according to the R value, G value and B value obtained by the RGB photoelectric sensor includes:

[0172] Obtaining an initial R value, an initial G value, and an initial B value of the hydrogen-sensitive color-changing tape 200 at an initial moment;

[0173] Collecting the detection R value, detection G value and detection B value of the hydrogen-sensitive color-changing tape 200 after a preset time period;

[0174] Obtain a changed R value according to the initial R value and the detected R value, obtain a changed G value according to the initial G value and the detected G value, and obtain a changed B value according to the initial B value and the detected B value;

[0175] Determine whether the change R value exceeds the first preset threshold, whether the change G value exceeds the second preset threshold, or whether the change B value exceeds the third preset threshold; if so, determine that hydrogen leakage occurs.

[0176] In this embodiment, the first preset threshold, the second preset threshold and the third preset threshold are all positive numbers.

[0177] Right now:

[0178] R t0 -R t0+t >m or G t0 -G t0+t >n

[0179] Among them, R t0 and G t0 are the initial R value and initial G value of the hydrogen-sensitive color-changing tape 200 at time t0 (initial time), R t0+t and Gt0+t It is the detection R value and detection G value of the hydrogen-sensitive color-changing tape 200 after t time (preset time period). In order to ensure the effectiveness of the alarm and avoid false alarms, t can usually be 0.1s, 0.2s, 0.3s, 0.4s, ..., 1.8s, 1.9s, 2.0s. The m and n values ​​are the color change judgment threshold points (m is the first preset threshold, n is the second preset threshold), and both are positive numbers.

[0180] In an embodiment of the present invention, the hydrogen leakage detection system further includes an alarm module, and the alarm module is used to calculate the risk level of hydrogen leakage when hydrogen leakage occurs, and perform an alarm action according to the risk level of hydrogen leakage.

[0181] In this embodiment, the calculation of the risk level of hydrogen leakage includes:

[0182] Calculate the R value discoloration rate of the hydrogen-sensitive color-changing tape 200 according to the changed R value;

[0183] Calculate the G value color change rate of the hydrogen-sensitive color-changing tape 200 according to the changed G value;

[0184] Calculate the B value color change rate of the hydrogen-sensitive color-changing tape 200 according to the changed B value;

[0185] The risk level of hydrogen leakage is obtained according to the R value color change rate, the G value color change rate or the B value color change rate of the hydrogen-sensitive color-changing tape 200.

[0186] The calculation formula of R value color change rate is:

[0187] R RL =(R t0 -R t0+t ) / t;

[0188] Similarly: The calculation formula for the G value color change rate is:

[0189] G RL =(G t0 -G t0+t ) / t.

[0190] The risk level of hydrogen leakage can be obtained according to one of the R value color change rate, G value color change rate or B value color change rate of the hydrogen sensitive color changing tape 200. Specifically, the R value color change rate, G value color change rate or B value color change rate respectively correspond to three risk level tables, and the risk level corresponding to the color change rate obtained by querying and calculating the risk table.

[0191] Table 1 is a table of risk levels corresponding to the R value discoloration rate, and Table 2 is a table of risk levels corresponding to the G value discoloration rate, as shown in Table 1 and Table 2:

[0192] Table 1: Risk level table corresponding to the R value discoloration rate

[0193] <![CDATA[R RL Value]]> Risk Level ≤10 Low risk 10～30 Medium risk 30～40 High risk ≥40 Emergent Risk

[0194] Table 2: Risk level table corresponding to the G value color change rate

[0195] <![CDATA[G RL Value]]> Risk Level ≤8 Low risk 8～20 Medium risk 20～30 High risk ≥30 Emergent Risk

[0196] In this embodiment, a corresponding alarm action is executed according to the risk level obtained by the query.

[0197] When a hydrogen leak is confirmed, the control module transmits the hydrogen leak alarm information and the hydrogen leak risk level signal to the central control system, and the central control system takes corresponding interlocking measures. When the risk is low or medium, the risk level change should be continuously tracked. If the risk level remains basically unchanged, the original state can be maintained unchanged; if it is a medium risk, the hydrogen scene operator should strengthen the inspection of the leakage alarm point; if it is a high risk, the hydrogen leakage point should be cut off from the hydrogen system as much as possible, and appropriate pressure relief and treatment measures should be taken to avoid further expansion of hydrogen leakage; if it is an emergency risk, emergency parking should be taken immediately, and the corresponding hydrogen supply should be cut off. The residual hydrogen in the hydrogen system should be discharged through the emergency relief outlet as soon as possible.

[0198] Example 3

[0199] In this embodiment, a hydrogen-sensitive color-changing tape 200 is installed at the connection of the hydrogen filling station pipeline. The hydrogen-sensitive color-changing tape has a color change before (original time) R 0 =207, G 0 =228, B 0 =232, and the color remains unchanged before leakage occurs; after complete color change, R=4, G=41, B=249;

[0200] A hydrogen-sensitive color-changing sensor mechanism is installed to collect the color signal on the hydrogen-sensitive color-changing tape 200 through the RGB photoelectric sensor 140. The sampling interval of the sensor is t=1s. At this time, m=15 and n=11;

[0201] The color change information of the hydrogen-sensitive color-changing tape 200 is converted into a detection R value, a detection G value and a detection B value through the RGB photoelectric sensor 140, and the detection R value, the detection G value and the detection B value and the time signal are transmitted to the control module in real time;

[0202] The control module calculates based on the detected R value, G value, B value and time signal, and finds that R in RGB after time t 0 -R t =0, G 0 -G t =0, no hydrogen leakage.

[0203] Example 4

[0204] In this embodiment, a hydrogen-sensitive color-changing tape 200 is installed at the connection of the hydrogen filling station pipeline. The hydrogen-sensitive color-changing tape has a color change before (original time) R 0 =207, G 0 =228, B 0 =232, and the color remains unchanged before leakage occurs; after complete color change, R=4, G=41, B=249;

[0205] A hydrogen-sensitive color-changing sensor mechanism is installed to collect the color signal on the hydrogen-sensitive color-changing tape 200 through the RGB photoelectric sensor 140. The sampling interval of the sensor is t=1s. At this time, m=15 and n=11;

[0206] The color change information of the hydrogen-sensitive color-changing tape 200 is converted into a detection R value, a detection G value and a detection B value through the RGB photoelectric sensor 140, and the detection R value, the detection G value and the detection B value and the time signal are transmitted to the control module in real time;

[0207] The control module calculates based on the detected R value, G value, B value and time signal, and finds that after t = 1S, R in RGB 0 -R t =25, G 0 -G t =13 satisfies R t0 -R t0+t >m or G t0 -G t0+t >n, it is confirmed that hydrogen leakage has occurred and a hydrogen leakage alarm signal is issued.

[0208] Calculate R RL and G RL , respectively R RL =25, G RL =13, referring to the data in Table 1 and Table 2, the risk level of hydrogen leakage is medium risk at this time. Operators in hydrogen scenarios should strengthen inspections of leakage alarm locations to avoid increasing the risk level of hydrogen leakage.

[0209] Example 5

[0210] In this embodiment, a hydrogen-sensitive color-changing tape 200 is installed at the connection of the hydrogen supply mother station pipeline. The hydrogen-sensitive color-changing tape has a color change before (original time) R 0 =207, G 0 =228, B 0 =232, and the color remains unchanged before leakage occurs; after complete color change, R=4, G=41, B=249;

[0211] A hydrogen-sensitive color-changing sensing mechanism is installed to collect the color signal on the hydrogen-sensitive color-changing tape 200 through the RGB photoelectric sensor 140. The sampling interval of the sensor is t=0.5s. At this time, m=7, n=5;

[0212] The color change information of the hydrogen-sensitive color-changing tape 200 is converted into a detection R value, a detection G value and a detection B value through the RGB photoelectric sensor 140, and the detection R value, the detection G value and the detection B value and the time signal are transmitted to the control module in real time;

[0213] The control module calculates based on the detected R value, G value, B value and time signal, and finds that R in RGB after time t 0 -R t =0, G 0 -G t =0, no hydrogen leakage.

[0214] Example 6

[0215] In this embodiment, a hydrogen-sensitive color-changing tape 200 is installed at the connection of the hydrogen supply mother station pipeline. Before the hydrogen-sensitive color-changing tape changes color (at the original moment), R0=207, G0=228, B0=232, and the color remains unchanged before leakage occurs; after the complete color change, R=4, G=41, B=249;

[0216] A hydrogen-sensitive color-changing sensing mechanism is installed to collect the color signal on the hydrogen-sensitive color-changing tape 200 through the RGB photoelectric sensor 140. The sampling interval of the sensor is t=0.5s. At this time, m=7, n=5;

[0217] The color change information of the hydrogen-sensitive color-changing tape 200 is converted into a detection R value, a detection G value and a detection B value through the RGB photoelectric sensor 140, and the detection R value, the detection G value and the detection B value and the time signal are transmitted to the control module in real time;

[0218] The control module calculates based on the detected R value, G value, B value and time signal, and finds that after t = 1S, R in RGB 0 -R t =14, G 0 -G t =9 satisfies R t0 -R t0+t >m or G t0 -G t0+t >n, it is confirmed that hydrogen leakage has occurred and a hydrogen leakage alarm signal is issued.

[0219] Calculate R RL and G RL , respectively R RL =9.3, G RL=0.67, referring to the data in Table 1 and Table 2, the risk level of hydrogen leakage is low at this time. Operators in hydrogen scenarios should continue to track changes in risk levels. If the risk level remains basically unchanged, the original status can be maintained unchanged.

[0220] Example 7

[0221] In this embodiment, a hydrogen-sensitive color-changing tape 200 is installed at the connection of the hydrogen filling station pipeline. The hydrogen-sensitive color-changing tape has a color change before (original time) R 0 =207, G 0 =228, B 0 =232, and the color remains unchanged before leakage occurs; after complete color change, R=4, G=41, B=249;

[0222] A hydrogen-sensitive color-changing sensing mechanism is installed, and the color signal on the hydrogen-sensitive color-changing tape 200 is collected by the RGB photoelectric sensor 140. The sampling interval of the sensor is t=1s. At this time, m=4, n=1.8. Due to the limited space (a+b=8mm≤10mm), a compact optical path 160 is installed there. Compared with before the installation, the overall size of the RGB photoelectric sensor 140 is reduced from 3cm×2cm×2cm to 1.5cm×1.5cm×1cm, and the volume is reduced by 81.25%;

[0223] The color change information of the hydrogen-sensitive color-changing tape 200 is converted into a detection R value, a detection G value and a detection B value through the RGB photoelectric sensor 140, and the detection R value, the detection G value and the detection B value and the time signal are transmitted to the control module in real time;

[0224] The control module calculates based on the detected R value, G value, B value and time signal, and finds that R in RGB after time t 0 -R t =0, G 0 -G t =0, no hydrogen leakage.

[0225] Example 8

[0226] In this embodiment, a hydrogen-sensitive color-changing tape 200 is installed at the connection of the hydrogen filling station pipeline. The hydrogen-sensitive color-changing tape has a color change before (original time) R 0 =207, G 0 =228, B 0 =232, and the color remains unchanged before leakage occurs; after complete color change, R=4, G=41, B=249;

[0227] A hydrogen-sensitive color-changing sensing mechanism is installed, and the color signal on the hydrogen-sensitive color-changing tape 200 is collected by the RGB photoelectric sensor 140. The sampling interval of the sensor is t=1s. At this time, m=4, n=1.8. Due to the limited space (a+b=8mm≤10mm), a compact optical path 160 is installed there. Compared with before the installation, the overall size of the RGB photoelectric sensor 140 is reduced from 3cm×2cm×2cm to 1.5cm×1.5cm×1cm, and the volume is reduced by 81.25%;

[0228] The color change information of the hydrogen-sensitive color-changing tape 200 is converted into a detection R value, a detection G value and a detection B value through the RGB photoelectric sensor 140, and the detection R value, the detection G value and the detection B value and the time signal are transmitted to the control module in real time;

[0229] The control module calculates based on the detected R value, G value, B value and time signal, and finds that after t = 1S, R in RGB 0 -R t =22, G 0 -G t =15 satisfies R t0 -R t0+t >m or G t0 -G t0+t >n, it is confirmed that hydrogen leakage has occurred and a hydrogen leakage alarm signal is issued.

[0230] Calculate the RRL and GRL, which are RRL=36.7 and GRL=25 respectively. Referring to the data in Table 1 and Table 2, the risk level of hydrogen leakage is high at this time. The hydrogen leakage site should be cut off from the hydrogen system as much as possible, and take corresponding pressure relief and treatment measures to avoid further expansion of hydrogen leakage.

[0231] An embodiment of the present invention further provides a computer device, including: 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 method.

[0232] An embodiment of the present invention further provides a machine-readable storage medium having computer program instructions stored thereon, wherein the computer program instructions implement the above-mentioned hydrogen leak detection method when executed by a processor.

[0233] 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.

[0234] 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.

[0235] 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.

[0236] 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.

[0237] 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.

[0238] 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 system, 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 hydrogen-sensitive color-changing sensor mechanism 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 compact optical path for increasing the effective monitoring area of ​​the hydrogen-sensitive color-changing sensor mechanism; a control module for determining whether a hydrogen leak occurs based on an electrical signal output by the hydrogen-sensitive color-changing sensor mechanism; The compact optical pathway can be detachably installed in the hydrogen-sensitive color-changing sensing mechanism.

2. The hydrogen leak detection system according to claim 1, It is characterized in that The system further comprises: A distance judgment module, used to judge whether the distance between the hydrogen-sensitive color-changing tape and the hydrogen-sensitive color-changing sensing mechanism is less than a preset distance value compact optical path; The compact optical pathway is installed in the hydrogen-sensitive color-changing sensor mechanism when the distance judgment module judges that the distance between the hydrogen-sensitive color-changing tape and the hydrogen-sensitive color-changing sensor mechanism is less than a preset distance value.

3. The hydrogen leak detection system according to claim 2, It is characterized in that The hydrogen-sensitive color-changing sensing mechanism comprises: a light source component, an RGB photoelectric sensor, a convex lens and a concave lens; The light source assembly is used to irradiate the hydrogen-sensitive color-changing tape; The concave lens is arranged between the light source assembly and the hydrogen-sensitive color-changing tape; The RGB photoelectric sensor is arranged above the hydrogen-sensitive color-changing tape, and is used to collect the color signal of the hydrogen-sensitive color-changing tape, and convert the collected color signal into an electrical signal, and analyze the electrical signal to obtain the color R value, G value and B value; The convex lens is arranged between the RGB photoelectric sensor and the hydrogen-sensitive color-changing tape.

4. The hydrogen leak detection system according to claim 3, It is characterized in that The compact optical path includes a plurality of total reflectors, the angles of which are adjustable. By adjusting the angles of the total reflectors, the light path emitted by the light source assembly is vertically irradiated onto the hydrogen-sensitive color-changing tape, thereby increasing the effective light irradiation area on the hydrogen-sensitive color-changing tape.

5. The hydrogen leak detection system according to claim 3, It is characterized in that The distance between the hydrogen-sensitive color-changing tape and the hydrogen-sensitive color-changing sensing mechanism includes: The first distance is the distance between the light source assembly and the concave lens; The second distance is the distance between the concave lens and the hydrogen-sensitive color-changing tape; The third distance is the distance between the hydrogen-sensitive color-changing tape and the convex lens; The fourth distance is the distance between the convex lens and the RGB photoelectric sensor.

6. The hydrogen leak detection system according to claim 5, It is characterized in that The distance judgment module is specifically used for: It is determined whether the sum of the first distance and the second distance is less than the first preset distance value, or it is determined whether the sum of the third distance and the fourth distance is less than the second preset distance value.

7. The hydrogen leak detection system according to claim 6, It is characterized in that When the sum of the first distance and the second distance is less than the first preset distance value and the sum of the third distance and the fourth distance is greater than the second preset distance value, the compact optical pathway is installed between the light source assembly and the concave lens or between the concave lens and the hydrogen-sensitive color-changing tape; When the sum of the first distance and the second distance is greater than the first preset distance value and the sum of the third distance and the fourth distance is less than the second preset distance value, the compact optical pathway is installed between the hydrogen-sensitive color-changing tape and the convex lens or between the convex lens and the RGB photoelectric sensor; When the sum of the first distance and the second distance is less than the first preset distance value and the sum of the third distance and the fourth distance is less than the second preset distance value, the compact optical pathway is installed between the light source assembly and the concave lens or between the concave lens and the hydrogen-sensitive color-changing tape, and the compact optical pathway is located between the hydrogen-sensitive color-changing tape and the convex lens or between the convex lens and the RGB photoelectric sensor.

8. The hydrogen leak detection system according to claim 3, It is characterized in that The control module is specifically used to determine whether hydrogen leakage occurs according to the R value, G value and B value obtained by analyzing the RGB photoelectric sensor.

9. The hydrogen leak detection system according to claim 8, It is characterized in that Judging whether hydrogen leakage occurs according to the R value, G value and B value obtained by analyzing the RGB photoelectric sensor includes: Obtaining the initial R value, initial G value and initial B value of the hydrogen-sensitive color-changing tape at the initial moment; Collect the detection R value, detection G value and detection B value of the hydrogen-sensitive color-changing tape after a preset time period; Obtain a changed R value according to the initial R value and the detected R value, obtain a changed G value according to the initial G value and the detected G value, and obtain a changed B value according to the initial B value and the detected B value; Determine whether the change R value exceeds the first preset threshold, whether the change G value exceeds the second preset threshold, or whether the change B value exceeds the third preset threshold; if so, determine that hydrogen leakage occurs.

10. The hydrogen leak detection system according to claim 8, It is characterized in that The hydrogen leakage detection system further comprises an alarm module, which is used to calculate the risk level of hydrogen leakage when hydrogen leakage occurs and to perform an alarm action according to the risk level of hydrogen leakage.

11. The hydrogen leak detection system according to claim 10, It is characterized in that The calculation of the risk level of hydrogen leakage includes: Calculate the R value discoloration rate of the hydrogen-sensitive discoloration tape according to the changed R value; Calculate the G value color change rate of the hydrogen-sensitive color-changing tape according to the changed G value; Calculate the B value discoloration rate of the hydrogen-sensitive discoloration tape according to the changed B value; The risk level of hydrogen leakage is obtained according to the R value color change rate, G value color change rate or B value color change rate of the hydrogen-sensitive color-changing tape.

12. A method for detecting hydrogen leakage, 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; Installing a hydrogen-sensitive color-changing sensor mechanism, calculating the distance between the hydrogen-sensitive color-changing tape and the hydrogen-sensitive color-changing sensor mechanism, determining whether the distance between the hydrogen-sensitive color-changing tape and the hydrogen-sensitive color-changing sensor mechanism is less than a preset distance value, and if so, installing the compact optical path in the hydrogen-sensitive color-changing sensor mechanism; 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 the electrical signal.

13. The method for detecting hydrogen leakage according to claim 12, further comprising: include: 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.

14. A computer device, It is characterized in that include: Memory; processor; as well as Computer programs; The computer program is stored in a memory and is configured to be executed by a processor to implement the hydrogen leak detection method according to any one of claims 12 to 13.

15. 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 method according to any one of claims 12 to 13.

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