High-pressure gas storage leakage detection unit, device and method

Abstract

The invention discloses a high-pressure gas storage leakage detection unit, device and method, and belongs to the technical field of high-pressure gas storage detection, the high-pressure gas storage leakage detection unit comprises a fixed frame, a plurality of detection sheets, a plurality of strain gauges and a data receiver, and the fixed frame is enclosed to form a detection plane. The plurality of detection sheets are arranged on the fixed frame in parallel along the detection plane, one end, far away from the adjacent row of detection sheets, of each detection sheet is connected with the fixed frame, the other end of each detection sheet is provided with a free deformation end capable of being driven by the pressure difference, each detection sheet is provided with a strain gauge, and the strain gauges are configured to monitor strain signals caused by the pressure difference in real time. And the data receiver is electrically connected with the strain gauges and is used for acquiring strain data and acquiring position coordinates and contour features of the leakage points based on the strain data. According to the method, the leakage position can be determined, the geometrical characteristics of the leakage hole can be judged, the risk of overall fracture in film detection is overcome, and gradient leakage sensing under the high-pressure and large-flow working condition is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of high-pressure gas storage detection technology, and in particular to a high-pressure gas storage leakage detection unit, device and method. Background Art

[0002] Compressed air energy storage (CAES) is a long-term energy storage technology with advantages such as large storage capacity, high safety, and long lifespan. The safety of its gas storage facilities is crucial. Leakages can occur during operation, leading to compressed air loss and reduced energy storage efficiency, and potentially causing safety incidents. Therefore, timely and accurate detection of leaks is crucial to ensuring safe operation.

[0003] To address the leakage problem in gas storage reservoirs, existing technologies locate leak points based on membrane deformation. However, relying on the membrane as a sensitive medium, when encountering high-pressure or large-flow leakage, the membrane is easily ruptured due to instantaneous impact, resulting in detection failure or even equipment damage, seriously limiting its reliability and applicability under strong leakage conditions. Summary of the Invention

[0004] The present invention aims to address at least one of the technical problems existing in the prior art. To this end, the present invention proposes a high-pressure gas storage reservoir leak detection unit, device, and method that can ensure stable detection under severe leak conditions, improve leak repair efficiency, and reduce the impact on the energy storage efficiency of large-scale high-pressure gas storage reservoirs.

[0005] According to an embodiment of the first aspect of the present invention, a high-pressure gas storage reservoir leakage detection unit includes: a fixed frame, which encloses a detection plane; a plurality of detection plates, which are arranged parallel to the detection plane on the fixed frame, and the plurality of detection plates are distributed in a double-row array along a first direction, and one end of each detection plate away from an adjacent row of detection plates is connected to the fixed frame, and the other end is provided with a free deformation end that can be driven by an air pressure difference; a plurality of strain gauges, each detection plate is provided with a strain gauge, and the strain gauge is located on the detection plate near one end of the fixed frame, and the strain gauge is configured to monitor the strain signal caused by the pressure difference in real time; a data receiver, which is electrically connected to the plurality of strain gauges, and the data receiver is used to collect strain data and obtain the position coordinates and contour features of the leakage point based on the strain data.

[0006] The high-pressure gas storage leakage detection unit, device and method according to the embodiments of the present invention have at least the following beneficial effects: multiple detection sheets are arranged in an array on a fixed frame to form a flexible detection surface, and the free ends thereof are allowed to generate differential bending under the action of airflow. The strain gauges fixed thereon capture the microstrain signals of each elastic sheet, convert the dynamic pressure gradient generated by the leakage point into a strain distribution at the root of the elastic sheet, and then construct the spatial pressure field distribution of the leakage airflow. This can not only determine the leakage location and judge the geometric characteristics of the leakage hole, but also overcome the risk of overall rupture in thin film detection, and realize gradient leakage perception under high-pressure and large-flow conditions.

[0007] According to some embodiments of the present invention, the detection piece is provided with a connecting portion, the detection piece is connected to the fixed frame via the connecting portion, and the width of the connecting portion is smaller than the width of the detection piece.

[0008] According to some embodiments of the present invention, the strain gauge is provided on the connecting portion.

[0009] According to some embodiments of the present invention, a gasket is provided on the detection surface of the fixed frame, and the gasket is used to make the fixed frame adapt to the curved wall surface of the high-pressure gas storage reservoir.

[0010] According to some embodiments of the present invention, a guide channel is formed between the two rows of detection plates, which passes through the guide channel in a first direction. Two leakage holes are provided on the gasket at positions corresponding to the guide channel. The two leakage holes are located at opposite ends of the guide channel, and the axes of the two leakage holes coincide with the center line of the guide channel. The leakage holes are used to directionally guide external interfering airflow.

[0011] According to some embodiments of the present invention, a laser rangefinder is provided on the gasket, and the laser rangefinder is configured to dynamically monitor the distance between the detection piece and the wall of the high-pressure gas storage reservoir.

[0012] According to some embodiments of the present invention, the strain gauge is provided with a temperature sensing module and a compensation module. The temperature compensation module is configured to collect the strain signal of the strain gauge and the ambient temperature data of the temperature sensing module in real time to obtain an effective strain signal after temperature compensation.

[0013] According to the second aspect of the present invention, a high-pressure gas storage reservoir leakage detection device includes: a high-pressure gas storage reservoir leakage detection unit, and a base; a circumferential scanning mechanism, the circumferential scanning mechanism is arranged on the base; a radial adjustment mechanism, the radial adjustment mechanism is connected to the circumferential scanning mechanism, the output end of the radial adjustment mechanism is connected to the high-pressure gas storage reservoir leakage detection unit, the circumferential scanning mechanism is configured to drive the high-pressure gas storage reservoir leakage detection unit to scan at all angles along the circumference of the high-pressure gas storage reservoir, and the radial adjustment mechanism is configured to drive the high-pressure gas storage reservoir leakage detection unit to adjust the radial displacement relative to the inner wall of the high-pressure gas storage reservoir; a feeding mechanism, the feeding mechanism is arranged on the base, and the feeding mechanism is used to drive the base to move along the axis of the high-pressure gas storage reservoir; a control system, the control system is respectively connected to the high-pressure gas storage reservoir leakage detection unit, the circumferential scanning mechanism, the radial adjustment mechanism and the feeding mechanism.

[0014] According to some embodiments of the present invention, a plurality of high-pressure gas storage leakage detection units are provided, and the plurality of high-pressure gas storage leakage detection units are connected in an array.

[0015] According to the high-pressure gas storage reservoir leakage detection method of the third aspect of the embodiment of the present invention, a high-pressure gas storage reservoir leakage detection device is used, and the method includes: using a radial adjustment mechanism to drive the high-pressure gas storage reservoir leakage detection unit to move radially, so that the high-pressure gas storage reservoir leakage detection unit maintains a preset distance from the inner wall of the high-pressure gas storage reservoir; using a circumferential scanning mechanism to drive the high-pressure gas storage reservoir leakage detection unit to continuously scan along the circumference of the high-pressure gas storage reservoir; when the high-pressure gas storage reservoir leakage detection unit approaches the leakage point, the local pressure difference formed by the leakage airflow causes the corresponding detection piece to deform, and the control system collects deformation data in real time; the control system locates the position of the leakage point based on the amplitude and spatial distribution characteristics of the strain gauge response signal, and identifies the shape of the leakage area through the activated detection piece combination pattern; after the circumferential scanning mechanism drives the high-pressure gas storage reservoir leakage detection unit to circle the high-pressure gas storage reservoir for one week, the feeding mechanism is used to drive the high-pressure gas storage reservoir leakage detection unit to move along the axis of the high-pressure gas storage reservoir until continuous scanning and detection of the entire wall of the high-pressure gas storage reservoir is achieved.

[0016] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0018] Figure 1 This is a structural diagram of a high-pressure gas storage leakage detection unit in this specific embodiment;

[0019] Figure 2 for Figure 1 Schematic diagram of the structure of the middle detection surface;

[0020] Figure 3 This is a schematic structural diagram of a high-pressure gas storage leakage detection device according to this specific embodiment;

[0021] Figure 4 Schematic diagram of the flow of the high-pressure gas storage leakage detection method of this specific embodiment.

[0022] Reference numerals:

[0023] Fixed frame 100, laser rangefinder 110;

[0024] Detection piece 200, connecting portion 210, guide channel 220;

[0025] Strain gauge 300;

[0026] Gasket 400, air leakage hole 410;

[0027] Base 500;

[0028] Circumferential scanning mechanism 600, circumferential support 610, connecting shaft 620, scanning arm 630;

[0029] Radial adjustment mechanism 700, telescopic cylinder 710;

[0030] Feed mechanism 800 , track 810 , load cart 820 . DETAILED DESCRIPTION

[0031] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0032] In the description of the present invention, "several" means one or more, "multiple" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, and "above," "below," and "within" are understood to include the number itself. The use of terms such as "first" and "second" is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0033] In the description of the present invention, unless otherwise clearly defined, words such as “setting”, “installation” and “connection” should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above words in the present invention based on the specific content of the technical solution.

[0034] Please refer to Figures 1 to 2 This embodiment discloses a high-pressure gas storage leak detection unit, comprising a fixed frame 100, a plurality of detection sheets 200, a plurality of strain gauges 300, and a data receiver. The fixed frame 100 encloses a detection plane. The plurality of detection sheets 200 are arranged parallel to the fixed frame 100 along the detection plane. The plurality of detection sheets 200 are arranged in a double-row array along the left-right direction (i.e., the first direction). One end of each detection sheet 200, away from the adjacent row of detection sheets 200, is connected to the fixed frame 100, and the other end is provided with a free-deformable end that can be driven by a pressure difference. Each detection sheet 200 is provided with a strain gauge 300. The strain gauge 300 is located on the detection sheet 200 near one end of the fixed frame 100. The strain gauge 300 is configured to monitor the strain signal caused by the pressure difference in real time. The data receiver is electrically connected to the plurality of strain gauges 300 and is used to collect strain data and obtain the location coordinates and contour features of the leak point based on the strain data.

[0035] like Figure 1 and Figure 2 As shown, the fixed frame 100 encloses a rectangular detection plane, and a plurality of detection pieces 200 are arranged on the fixed frame 100 in an array along the detection plane, wherein the plurality of detection pieces 200 are divided into two equal rows and arranged extending in the left-right direction. One end of each detection piece 200 is connected to the fixed frame 100, and the other end extends into the detection plane and forms a free deformation end that can be driven by air pressure. Each detection piece 200 is provided with a strain gauge 300 that can monitor the strain of the detection piece 200 in real time, and the strain gauge 300 is electrically connected to the data receiver through a wire. Therefore, multiple detection sheets 200 are arranged in an array on the fixed frame 100 to form a flexible detection surface, and the free ends thereof are allowed to bend differentially under the action of airflow. The strain gauges 300 fixed thereon capture the microstrain signals of each elastic sheet, convert the dynamic pressure gradient generated by the leakage point into a strain distribution at the root of the elastic sheet, and then construct the spatial pressure field distribution of the leakage airflow. This can not only determine the leakage location and judge the geometric characteristics of the leakage hole, but also overcome the risk of overall rupture in thin film detection, and realize gradient leakage perception under high-pressure and high-flow conditions.

[0036] It should be noted that the rectangular detection plane formed by the fixed frame 100 refers to the plane where the fixed frame 100 is located, and the detection surface of the fixed frame 100 refers to the end of the fixed frame 100 close to the inner wall of the high-pressure gas storage reservoir during the detection process.

[0037] In some specific embodiments of the present invention, steel sheets are used as the material of the detection sheet 200. The high elastic modulus and excellent mechanical strength of steel enable it to produce sufficiently sensitive deformation under the impact of high-pressure airflow while avoiding the risk of plastic deformation or fracture. At the same time, the fatigue resistance of steel ensures the measurement stability of the detection unit under long-term cyclic loads, which is conducive to improving the accuracy of leak positioning.

[0038] In some specific embodiments of the present invention, the detection piece 200 is inserted into the corresponding frame of the fixed frame 100, the detection piece 200 and the fixed frame 100 are interference fit, and the strain gauge 300 is provided at the root of the connection between the detection piece 200 and the fixed frame 100. Furthermore, the detection piece 200 is provided with a connecting portion 210, and the detection piece 200 is connected to the fixed frame 100 through the connecting portion 210, and the width of the connecting portion 210 is smaller than the width of the detection piece 200. It should be noted that the width direction of the connecting portion 210 and the detection piece 200 extends in the left-right direction. The reduction in the width of the connecting portion 210 effectively reduces the bending stiffness of this area, so that the detection piece 200 produces a greater bending deformation under the same airflow. Without affecting the stability of the overall structure, the response ability of the detection piece 200 to tiny airflow changes is effectively enhanced.

[0039] In some specific embodiments of the present invention, the strain gauge 300 is arranged on the connecting portion 210. Therefore, when the free end of the detection gauge 200 is subjected to the action of airflow, the cross-section of the connecting portion 210 suddenly decreases, and obvious stress concentration is formed in this area, so that the strain gauge 300 attached near the connecting portion 210 can detect a more significant strain signal, thereby improving the detection sensitivity.

[0040] In some specific embodiments of the present invention, a gasket 400 is installed on the detection surface of the fixed frame 100. This gasket 400 is used to adapt the fixed frame 100 to the curved wall of the high-pressure gas storage reservoir. Specifically, the gasket 400 acts as an intermediate transition layer, deforming under pressure to closely conform to the curved wall of the gas storage reservoir. This provides a stable mounting base for the fixed frame 100, creating a stable working environment for leak detection and ensuring that the strain gauge 300 can still obtain accurate leak detection data even under complex curved surface conditions.

[0041] Specifically, the gasket 400 is a rubber gasket 400 , which is an elastically compressible body and can be stretched or compressed as needed to change the distance, thereby making the fixing bracket fit the curved wall surface.

[0042] In some specific embodiments of the present invention, a guide channel is formed between the two rows of detection plates 200, which passes through the guide channel in a first direction. Two leakage holes 410 are provided on the gasket 400 at positions corresponding to the guide channel. The two leakage holes 410 are located at opposite ends of the guide channel, and the axes of the two leakage holes 410 coincide with the center line of the guide channel. The leakage holes 410 are used to directionally guide external interfering airflow.

[0043] like Figure 2 As shown, multiple detection pieces 200 are arranged in a double row with symmetry in the upper and lower directions, wherein the upper detection piece 200 is fixed to the upper frame of the fixed frame 100 through the top connection part 210, and the lower detection piece 200 is connected to the lower frame through the bottom connection part 210. The two rows of detection pieces 200 extend parallel to each other in the left and right directions and are arranged symmetrically about the center line. A guide channel is formed between the two rows of detection pieces 200, which runs through the left and right directions. The centerline position of the guide channel corresponds to the leakage holes 410 set on the left and right frames of the fixed frame 100. The two leakage holes 410 are opened at the intersection of the gasket 400 and the guide channel, and their axial direction is parallel to the center line of the guide channel, thereby forming a complete airflow diversion path and ensuring detection accuracy by controlling the airflow path. Specifically, the leakage holes 410 can guide external interference airflow to pass quickly, preventing its accumulation or disorderly diffusion, while allowing the real leakage airflow inside the gas storage reservoir to fully act on the detection piece 200 and generate a measurable strain signal. In this way, the deformation detected by the strain gauge 300 mainly reflects the airflow impact at the actual leakage point on the gas storage wall, while external environmental airflow such as wind and equipment operation disturbances is discharged through the leakage hole 410, thereby significantly reducing misjudgment and improving the reliability of leak detection.

[0044] In some specific embodiments of the present invention, a laser rangefinder 110 is provided on the gasket 400, and the laser rangefinder 110 is configured to dynamically monitor the distance between the detection piece 200 and the wall of the high-pressure gas storage reservoir. Figure 2 As shown, the gasket 400 is installed with two laser rangefinders 110 inlaid in the upper and lower directions. Both laser rangefinders 110 are located in the middle of the frame of the fixed frame 100. The laser rangefinders 110 use the optical ranging principle to dynamically capture the slight changes in the distance between the detection sheet 200 array and the inner wall surface, ensuring that the laser rangefinders 110 always maintain the optimal detection angle and measurement distance, providing stable and reliable spatial reference data for leak detection.

[0045] In some specific embodiments of the present invention, the strain gauge 300 is provided with a temperature sensing module and a compensation module. The temperature compensation module is configured to collect the strain signal of the strain gauge 300 and the ambient temperature data of the temperature sensing module in real time to obtain an effective strain signal after temperature compensation, thereby ensuring that the obtained strain signal and distance measurement value truly reflect the physical changes caused by the leakage, rather than the material deformation or dimensional drift caused by temperature fluctuations, thereby significantly improving the environmental adaptability and data reliability of the detection system.

[0046] Please refer to Figure 3 This embodiment discloses a high-pressure gas storage leak detection device, including a high-pressure gas storage leak detection unit, a base 500, a circumferential scanning mechanism 600, a radial adjustment mechanism 700, a feeding mechanism 800, and a control system. The circumferential scanning mechanism 600 is disposed on the base 500, and the radial adjustment mechanism 700 is connected to the circumferential scanning mechanism 600. The output end of the radial adjustment mechanism 700 is connected to the high-pressure gas storage leak detection unit. The circumferential scanning mechanism 600 is configured to drive the high-pressure gas storage leak detection unit to scan the high-pressure gas storage at all angles along the circumference of the high-pressure gas storage. The radial adjustment mechanism 700 is configured to drive the high-pressure gas storage leak detection unit to adjust its radial displacement relative to the inner wall of the high-pressure gas storage. The feeding mechanism 800 is disposed on the base 500 and is used to drive the base 500 to move along the axis of the high-pressure gas storage. The control system is respectively connected to the high-pressure gas storage leak detection unit, the circumferential scanning mechanism 600, the radial adjustment mechanism 700, and the feeding mechanism 800.

[0047] like Figure 3As shown, the circumferential scanning mechanism 600 includes two circumferential supports 610 arranged in parallel on the base 500. The diameter of the two circumferential supports 610 is slightly smaller than the inner diameter of the high-pressure gas storage reservoir. The two circumferential supports 610 are arranged parallel to the axis via a connecting shaft 620, with a circumferential gap remaining between the circumferential supports 610. A scanning arm 630 that can rotate 360° is mounted on the connecting shaft 620. The scanning arm 630 is equipped with a servo drive system, which enables precise omnidirectional scanning along the circumferential gap. The radial adjustment mechanism 700 includes a telescopic cylinder 710 and a limit assembly. The end of the piston rod of the telescopic cylinder 710 is mounted with a plurality of high-pressure gas storage leak detection units arranged in an array. The radial displacement of the high-pressure gas storage leak detection units can be achieved by adjusting the air pressure. The limiting assembly utilizes a concave-convex fitting structure. An arc-shaped guide groove is machined into the inner side of the circumferential support 610, forming a sliding pair with a bump on the outer shell of the telescopic cylinder 710. As the scanning arm 630 rotates, the bump moves along the groove's trajectory, ensuring the stability of the scanning path while effectively suppressing radial vibration. The feed mechanism 800 comprises an axial track 810 laid on the inner wall of the high-pressure gas storage reservoir and an electric load trolley 820. The dual circumferential supports 610 are secured to the load trolley 820 via a base 500. The load trolley 820 is equipped with a servo drive system, enabling precise feeding along the track 810 at a constant speed.

[0048] Please refer to Figure 4 This embodiment discloses a method for detecting leakage in a high-pressure gas storage reservoir, comprising:

[0049] The radial adjustment mechanism 700 is used to drive the high-pressure gas storage reservoir leakage detection unit to move radially, so that the high-pressure gas storage reservoir leakage detection unit maintains a preset distance from the inner wall of the high-pressure gas storage reservoir;

[0050] The circumferential scanning mechanism 600 is used to drive the high-pressure gas storage reservoir leakage detection unit to continuously scan along the circumference of the high-pressure gas storage reservoir;

[0051] When the high-pressure gas storage leak detection unit approaches the leak point, the local pressure difference caused by the leaking airflow causes the corresponding detection piece 200 to deform, and the control system collects deformation data in real time;

[0052] The control system locates the position of the leak based on the amplitude and spatial distribution characteristics of the response signal of the strain gauge 300, and identifies the shape of the leak area through the combination pattern of the activated detection pieces 200;

[0053] After the circumferential scanning mechanism 600 drives the high-pressure gas storage reservoir leakage detection unit to circle the high-pressure gas storage reservoir, the feeding mechanism 800 is used to drive the high-pressure gas storage reservoir leakage detection unit to move along the axis of the high-pressure gas storage reservoir until continuous scanning and detection of the entire wall of the high-pressure gas storage reservoir is achieved.

[0054] The following is a specific example to illustrate the high-pressure gas storage leakage detection method:

[0055] The telescopic cylinder 710 of the radial adjustment mechanism 700 precisely adjusts the distance between the high-pressure gas storage leak detection unit array and the inner wall of the gas storage. A laser rangefinder 110 provides real-time distance feedback, ensuring that the high-pressure gas storage leak detection units always remain within a preset optimal detection range. The circumferential scanning mechanism 600 drives the scanning arm 630 in circular motion at a constant angular velocity. During the scanning process, the array of high-pressure gas storage leak detection units continuously scans the wall surface in a circular trajectory. When a detection unit approaches a leak point, the local pressure differential created by the leaking airflow causes the detection plate 200 at the corresponding location to deform. The mounted strain gauge 300 collects deformation data in real time, while also performing real-time temperature compensation to eliminate thermal interference. The control system locates the leak point coordinates and identifies the shape characteristics of the leak hole by analyzing the amplitude characteristics of the strain signal, the response timing differences between adjacent detection plates 200, and the spatial distribution of the detection plates 200. After completing the scan of each circular section, the load cart 820 moves along the axis by a step distance of the combined width of the array high-pressure gas storage leakage detection unit. Through this composite motion mode combining axial stepping with circumferential continuous scanning, the wall surface within a large range of the gas storage can be finally detected.

[0056] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the scope of the present invention.

Claims

1. A high-pressure gas storage leak detection unit, characterized in that: include: A fixed frame (100), wherein the fixed frame (100) encloses and forms a detection plane; A plurality of detection pieces (200), wherein the plurality of detection pieces (200) are arranged parallel to the detection plane on the fixed frame (100), and the plurality of detection pieces (200) are distributed in a double-row array along a first direction, and one end of each detection piece (200) away from the detection pieces (200) in an adjacent row is connected to the fixed frame (100), and the other end is provided with a free deformation end that can be driven by air pressure difference; a plurality of strain gauges (300), each of the detection gauges (200) being provided with the strain gauge (300), the strain gauge (300) being located on the detection gauge (200) near one end of the fixed frame (100), and the strain gauge (300) being configured to monitor in real time a strain signal caused by a pressure difference; A data receiver is electrically connected to the plurality of strain gauges (300), and is used to collect strain data and obtain the position coordinates and contour features of the leakage point based on the strain data.

2. The high-pressure gas storage leakage detection unit according to claim 1, characterized in that: The detection piece (200) is provided with a connecting portion (210), and the detection piece (200) is connected to the fixing frame (100) via the connecting portion (210), and the width of the connecting portion (210) is smaller than the width of the detection piece (200).

3. The high-pressure gas storage leakage detection unit according to claim 2, characterized in that: The strain gauge (300) is arranged on the connecting portion (210).

4. The high-pressure gas storage leakage detection unit according to claim 1, characterized in that: A gasket (400) is provided on the detection surface of the fixed frame (100), and the gasket (400) is used to make the fixed frame (100) adapt to the curved wall surface of the high-pressure gas storage tank.

5. The high-pressure gas storage leakage detection unit according to claim 4, characterized in that: A guide channel is formed between the two rows of detection sheets (200) and passes through in a first direction. Two air leakage holes (410) are provided on the gasket (400) at positions corresponding to the guide channel. The two air leakage holes (410) are respectively located at opposite ends of the guide channel. The axes of the two air leakage holes (410) coincide with the center line of the guide channel. The air leakage holes (410) are used for directionally guiding external interfering airflow.

6. The high-pressure gas storage leakage detection unit according to claim 4, characterized in that: A laser rangefinder (110) is provided on the gasket (400), and the laser rangefinder (110) is configured to dynamically monitor the distance between the detection piece (200) and the wall surface of the high-pressure gas storage reservoir.

7. The high-pressure gas storage leakage detection unit according to claim 1, characterized in that: The strain gauge (300) is provided with a temperature sensing module and a compensation module, and the temperature compensation module is configured to collect the strain signal of the strain gauge (300) and the ambient temperature data of the temperature sensing module in real time to obtain an effective strain signal after temperature compensation.

8. A high-pressure gas storage leakage detection device, characterized in that: comprising a high-pressure gas storage leakage detection unit according to any one of claims 1 to 7, and Base(500); a circumferential scanning mechanism (600), wherein the circumferential scanning mechanism (600) is arranged on the base (500); a radial adjustment mechanism (700), the radial adjustment mechanism (700) being connected to the circumferential scanning mechanism (600), the output end of the radial adjustment mechanism (700) being connected to the high-pressure gas storage reservoir leakage detection unit, the circumferential scanning mechanism (600) being configured to drive the high-pressure gas storage reservoir leakage detection unit to scan along the circumference of the high-pressure gas storage reservoir at all angles, and the radial adjustment mechanism (700) being configured to drive the high-pressure gas storage reservoir leakage detection unit to adjust its radial displacement relative to the inner wall of the high-pressure gas storage reservoir; a feeding mechanism (800), the feeding mechanism (800) being arranged on the base (500), and the feeding mechanism (800) being used to drive the base (500) to move along the axis of the high-pressure gas storage reservoir; A control system is provided, wherein the control system is respectively connected to the high-pressure gas storage leakage detection unit, the circumferential scanning mechanism (600), the radial adjustment mechanism (700), and the feeding mechanism (800).

9. The high-pressure gas storage leakage detection device according to claim 8, characterized in that: A plurality of the high-pressure gas storage leakage detection units are provided, and the plurality of the high-pressure gas storage leakage detection units are connected in an array.

10. A method for detecting leakage of a high-pressure gas storage reservoir, characterized in that: Using the high-pressure gas storage leakage detection device according to claim 8 or 9, the method comprises: The radial adjustment mechanism (700) is used to drive the high-pressure gas storage reservoir leakage detection unit to move radially, so that the high-pressure gas storage reservoir leakage detection unit maintains a preset distance from the inner wall of the high-pressure gas storage reservoir; The circumferential scanning mechanism (600) is used to drive the high-pressure gas storage reservoir leakage detection unit to continuously scan along the circumference of the high-pressure gas storage reservoir; When the high-pressure gas storage reservoir leakage detection unit approaches a leakage point, the local pressure difference formed by the leaking airflow causes the corresponding detection piece (200) to deform, and the control system collects deformation data in real time; The control system locates the position of the leakage point based on the amplitude and spatial distribution characteristics of the response signal of the strain gauge (300), and identifies the shape of the leakage area through the combination mode of the activated detection piece (200); After the circumferential scanning mechanism (600) drives the high-pressure gas storage reservoir leakage detection unit to circle the high-pressure gas storage reservoir, the feeding mechanism (800) is used to drive the high-pressure gas storage reservoir leakage detection unit to move along the axis of the high-pressure gas storage reservoir until continuous scanning and detection of the entire wall surface of the high-pressure gas storage reservoir is achieved.

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