High-pressure gas storage leakage point under-pressure detection device and method based on digital image

Abstract

The invention discloses a high-pressure gas storage leakage point under-pressure detection device and method based on a digital image, and relates to the technical field of under-pressure detection.The high-pressure gas storage leakage point under-pressure detection device comprises a camera, a flexible thin film, a fixing support, a partition plate and an oleophobic film, deformation caused by the pressure difference of the two sides is sensed through the thin film, and the leakage point is detected through the digital image technology; the flexible characteristic of the thin film enables the thin film to generate perceptual deformation under the action of pressure difference, the thin film is coated with a special mark, and an image is shot by a camera in the deformation process, so that data processing and analysis are facilitated; in order to ensure the detection precision, the device is provided with a fixing support to keep the thin film in a tensioned state and ensure the image quality. Due to the arrangement of the illuminating lamp, sufficient light in the shooting process is guaranteed, so that the accuracy of image acquisition is improved; the oleophobic film effectively prevents oil gas pollution and improves the stability of the detection process; the device has the advantages of being compact in structure, high in precision, high in reliability and the like, and is widely applied to leakage point detection under the under-pressure condition.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure detection, and in particular to a pressure detection device and method for leakage points in a high-pressure gas storage reservoir based on digital images. Background Art

[0002] Compressed air energy storage is a long-term energy storage technology with advantages such as large energy storage capacity, high safety and long life. The safety of its gas storage is of vital importance. Leakage problems may occur in the gas storage during operation, which will not only lead to the loss of compressed air and reduce energy storage efficiency, but also may cause safety accidents. Therefore, timely and accurate detection of leakage points in the gas storage is the key to ensuring its safe operation.

[0003] At present, there are various types of devices and methods for gas storage leakage, such as a gas storage combined structure comprehensive sealing performance test device disclosed in Chinese patent application publication number CN118999934A, a gas storage sealing system simulation test device and method disclosed in patent application publication number CN118687785A, and a salt rock underground gas storage leakage monitoring system disclosed in patent application publication number CN118314702A. However, such devices can only detect whether there is a leak in the gas storage, but lack corresponding means to find the location of the leak point, and cannot find the leak point specifically and repair it.

[0004] Therefore, in order to meet the actual engineering needs, it is of great significance to develop a detection device and method that can withstand high pressure and is suitable for finding leakage points over a large range in large gas storage facilities. Summary of the invention

[0005] The purpose of the present invention is to solve the problems mentioned in the above background technology, and to propose a device and method for detecting leakage points of a high-pressure gas storage reservoir under pressure based on digital images.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] In a first aspect, the present invention provides a pressure detection device for a leakage point of a high-pressure gas storage reservoir based on digital images, comprising a mechanical arm and a detection device mounted on the mechanical arm, wherein the detection device comprises a camera grip, a camera, a partition, an oleophobic film and a film;

[0008] One end of the camera grip is fixed on the mechanical arm, and the other end is equipped with a camera. A partition is installed on one side of the camera. Two small holes are dug on the partition, and the small holes are filled with an oleophobic film. A film is installed on the end surface of one end of the partition.

[0009] Furthermore, the robotic arm is used to carry the detection device and move along a predetermined path during the detection process.

[0010] Furthermore, the film is made of a flexible material and is used to sense the extremely small pressure difference on both sides of the film and to deform and react.

[0011] Furthermore, fixed brackets are installed around the film to keep the film in a taut state without generating wrinkles.

[0012] Furthermore, the camera maintains a fixed distance and angle with the film, so as to ensure that the photo taken by the camera presents a specific positional relationship with the film and satisfies the conditions related to the digital image.

[0013] Furthermore, the partition is covered between the camera lens and the film in the form of a truncated cone.

[0014] Furthermore, when the detection device passes through the leakage point, the film is deformed due to the pressure difference on both sides of the film; a mark of a special shape is coated on the film, and when the film is deformed, the mark is deformed accordingly, so as to facilitate observation with a camera.

[0015] Furthermore, the oleophobic film is used to block the oil and gas in the gas storage from entering the interlayer, so as to prevent the existing oil and gas from contaminating the camera lens and causing errors in photo shooting.

[0016] Furthermore, the partition is used to block the flow of air so that air only enters and exits the oleophobic layer, that is, it only flows in and out from one side when the detection device moves in a specific manner, so as to achieve the effect of improving the accuracy of leakage point location detection.

[0017] In a second aspect, the present invention provides a method for detecting leakage points of a high-pressure gas storage reservoir under pressure based on digital images, comprising:

[0018] Step 1: Prepare the robot arm, camera, film, partition and oleophobic film, ensure that the film is tight and wrinkle-free, and keep the camera at a fixed distance and angle with the film for digital image correlation analysis;

[0019] Step 2: The robot arm carries the detection device and moves along a predetermined path. The film is deformed by the pressure difference. A special mark is applied to the film and the camera captures the deformation process.

[0020] Step 3: The camera captures and collects image data, and uses digital image correlation technology to analyze the film deformation and determine the location of the leak;

[0021] Step 4: The oleophobic film blocks oil and gas from entering the partition to protect the camera lens; the partition controls air flow to improve detection accuracy.

[0022] Compared with the prior art, the invention has the following beneficial effects: the invention can detect leakage points in a large range of gas storages in real time and accurately in a high-pressure environment, with high detection accuracy and flexibility. By combining digital image correlation technology, the device can not only accurately find leakage points, but also effectively improve the safety and operating efficiency of gas storages, providing a more comprehensive solution for practical projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0024] Figure 1 It is a schematic diagram of a leak point pressure detection device combined with digital image correlation and thin film technology carried by a mechanical arm of the present invention;

[0025] Figure 2 It is a schematic diagram of a leak point pressure detection device combining digital image correlation and thin film technology according to the present invention;

[0026] Figure 3 It is a schematic diagram of a film of a leak point pressure detection device combining digital image correlation and film technology according to the present invention;

[0027] Figure 4 is a flow chart of the steps of the method of the present invention;

[0028] Figure numerals: 1. Robotic arm; 2. Detection device; 3. Camera grip; 4. Camera; 5. Partition; 6. Oleophobic film; 7. Film; 8. Mark. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be understood that the terms "include" and "comprising" used in the specification and claims of the present disclosure indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections thereof.

[0031] It should also be understood that the terms used in this disclosure are only for the purpose of describing specific embodiments and are not intended to limit the disclosure. As used in this disclosure and claims, the singular forms of "a", "an", and "the" are intended to include the plural forms unless the context clearly indicates otherwise. It should also be further understood that the term "and / or" used in this disclosure and claims refers to any combination of one or more of the associated listed items and all possible combinations, including these combinations.

[0032] See also Figure 1-3 As shown, on the one hand, the present invention provides a pressure detection device for leakage points in a high-pressure gas storage reservoir based on digital images, the device includes a mechanical arm 1 and a detection device 2, the monitoring device 2 includes a camera 4, a film 7, a camera grip 3, a partition 5, an oleophobic film 6, and a detection unit and an illumination lamp with a built-in leakage point detection technology based on digital image correlation.

[0033] During the detection process, the robot arm 1 carries the detection device 2 and moves along a predetermined path.

[0034] The film 7 is made of a flexible material and can sense the very small pressure difference on both sides of the film 7 and produce deformation and reaction.

[0035] The fixing brackets are installed around the film 7 to keep the film 7 in a taut state without generating wrinkles. At the same time, since the film 7 has a certain flexibility, it will still be deformed due to the pressure difference.

[0036] The camera 4 and the film 7 maintain a fixed distance and angle to ensure that the photos taken by the camera 4 and the film 7 present a specific positional relationship to meet the conditions related to the digital image and facilitate subsequent data processing and analysis.

[0037] The partition 5 is covered between the camera 4 lens and the film 7 in the form of a truncated cone. Two small holes are dug on the partition 5, and the small holes are filled with an oleophobic film 6.

[0038] When the detection device 2 passes the leakage point, the film 7 will be deformed due to the pressure difference on both sides of the film 7; for an ordinary transparent film 7, its deformation is difficult to detect, but a mark 8 of a special shape will be coated on the film 7. When the film 7 is deformed, the mark 8 will also be deformed, which is convenient for observation with the camera 4.

[0039] The oleophobic film 6 can block the oil and gas in the gas storage from entering the interlayer, so as to prevent the oil and gas from contaminating the camera 4 lens and causing errors in the photo shooting. The partition 5 can block the flow of air, so that the air only enters and exits the oleophobic layer, that is, only flows in and out from one side when the detection device 2 moves in a specific manner, so as to achieve the effect of improving the accuracy of the leakage point location detection. The setting of the lighting lamp ensures sufficient light during the shooting process, thereby improving the accuracy of image acquisition.

[0040] This technical solution can be flexibly applied to actual existing projects and real-time detection can be carried out in high-pressure gas storage reservoirs. It can more comprehensively determine whether there is a gas leak at the measured location, thus making up for the problem of lack of finding leakage points in large-scale high-pressure gas storage reservoirs in actual projects.

[0041] The present invention effectively solves the problem that there is no large-scale search for leakage points in the high-pressure environment of a large gas storage reservoir in existing projects, and provides a more comprehensive solution and device that can meet the needs of most practical projects.

[0042] The partition 5 of the present invention is covered between the camera 4 lens and the film 7 in the form of a truncated cone. Two small holes are dug on the partition 5, and the small holes are filled with an oleophobic film 6. The film 7 is made of a flexible material and can sense the very small pressure difference on both sides of the film 7 and produce deformation and react. The fixed bracket is installed around the film 7 to keep the film 7 in a taut state without wrinkles. At the same time, because the film 7 has a certain flexibility, it will still be deformed due to the pressure difference. The camera 4 maintains a fixed distance and angle with the film 7 to ensure that the photos taken by the camera 4 and the film 7 present a specific positional relationship to meet the conditions related to the digital image and facilitate subsequent data processing and analysis.

[0043] See also Figure 4 As shown, the present invention provides, on the other hand, a method for detecting leakage points of a high-pressure gas storage reservoir under pressure based on digital images, comprising:

[0044] Step 1: Prepare equipment such as the robot arm 1, camera 4, film 7, partition 5 and oleophobic film 6; ensure that the film 7 is made of flexible material, and fix the film 7 with a fixed bracket to keep it in a taut state to avoid wrinkles; the flexibility of the film 7 enables it to sense the pressure difference on both sides of the film 7 and produce deformation; maintain a fixed distance and angle between the camera 4 and the film 7 to ensure that the captured image meets the conditions related to the digital image, which is convenient for subsequent data analysis.

[0045] Step 2: During the detection process, the robot arm 1 carries the detection device 2 and moves along a predetermined path in an area where a leak may exist; when the detection device 2 passes the leak, the film 7 is deformed due to the pressure difference on both sides. Although the deformation of the film 7 may be difficult to detect directly, a mark 8 of a special shape is applied to the film 7. When deformed, the mark 8 will change accordingly, making it easier for the camera 4 to capture and observe.

[0046] Step 3: Camera 4 captures the changes on the surface of film 7 and obtains deformation data. The image data is analyzed by digital image correlation technology to determine the location of the leak from the degree of deformation marked on film 7; the image processing and data analysis algorithms further process the captured images to ultimately determine whether there is a leak.

[0047] Step 4: To ensure the accuracy of the image, the oleophobic film 6 is used to block the oil and gas in the gas storage from entering the partition to prevent the oil and gas from contaminating the camera lens; the partition 5 covers the space between the camera 4 lens and the film 7, and is provided with small holes to control the air flow, thereby improving the accuracy of leakage point detection and ensuring that data analysis is not interfered with by the outside world.

[0048] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A pressure detection device for leak points in a high-pressure gas storage reservoir based on digital images, comprising a mechanical arm (1) and a detection device (2) mounted on the mechanical arm (1), characterized in that: The detection device (2) comprises a camera grip (3), a camera (4), a partition (5), an oleophobic film (6) and a film (7); One end of the camera grip (3) is fixed on the mechanical arm (1), and the other end is equipped with a camera (4). A partition (5) is installed on one side of the camera (4). Two small holes are dug on the partition (5), and the small holes are filled with an oleophobic film (6). A film (7) is installed on the end surface of one end of the partition (5).

2. The device for detecting leakage points of high-pressure gas storage reservoirs under pressure based on digital images according to claim 1 is characterized in that: The mechanical arm (1) is used to carry the detection device (2) and move along a predetermined path during the detection process.

3. The device for detecting leakage points of high-pressure gas storage reservoirs under pressure based on digital images according to claim 1 is characterized in that: The film (7) is made of a flexible material and is used to sense the extremely small pressure difference between the two sides of the film (7) and to deform and react.

4. The device for detecting leakage points of high-pressure gas storage reservoirs under pressure based on digital images according to claim 3 is characterized in that: Fixed brackets are installed around the film (7) to keep the film (7) in a taut state without generating wrinkles.

5. The device for detecting leakage points of high-pressure gas storage reservoirs under pressure based on digital images according to claim 4 is characterized in that: The camera (4) and the film (7) maintain a fixed distance and angle, so as to ensure that the photo taken by the camera (4) and the film (7) present a specific positional relationship and meet the conditions related to the digital image.

6. The device for detecting leakage points of high-pressure gas storage reservoirs under pressure based on digital images according to claim 1 is characterized in that: The partition (5) is covered between the camera (4) lens and the film (7) in the form of a truncated cone.

7. The device for detecting leakage points of high-pressure gas storage reservoirs under pressure based on digital images according to claim 2 is characterized in that: When the detection device (2) passes the leakage point, the film (7) is deformed due to the pressure difference on both sides of the film (7); a mark (8) of a special shape is coated on the film (7), and when the film (7) is deformed, the mark (8) is deformed accordingly, so as to facilitate observation by the camera (4).

8. The device for detecting leakage points of high-pressure gas storage reservoirs under pressure based on digital images according to claim 5 is characterized in that: The oleophobic film (6) is used to block the oil and gas in the gas storage from entering the interlayer, so as to prevent the oil and gas from contaminating the camera (4) lens and causing errors in photographing.

9. The device for detecting leakage points of high-pressure gas storage reservoirs under pressure based on digital images according to claim 5 is characterized in that: The partition (5) is used to block the flow of air so that air only enters and exits the oleophobic layer, that is, only flows in and out from one side when the detection device (2) moves in a specific manner, so as to improve the accuracy of leak point location detection.

10. A method for detecting leakage points of high-pressure gas storage reservoirs under pressure based on digital images, characterized in that: Applied to realize the pressure detection device for leakage point of high-pressure gas storage based on digital image in any of claims 1-9, the method comprises: Step 1: Prepare the robot arm (1), camera (4), film (7), partition (5) and oleophobic film (6), ensure that the film is tight and wrinkle-free, and keep the camera (4) and film (7) at a fixed distance and angle to perform digital image correlation analysis; Step 2: The robot arm (1) carries the detection device (2) and moves along a predetermined path. The film (7) is deformed by the pressure difference. A special mark (8) is applied to the film (7), and the camera (4) captures the deformation process. Step 3: The camera (1) takes and collects image data, and uses digital image correlation technology to analyze the deformation of the film (7) to determine the location of the leakage point; Step 4: The oleophobic film (6) blocks oil and gas from entering the partition layer, protecting the camera (4) lens; the partition (5) controls air flow to improve detection accuracy.

Images