Ultrasonic leak detection apparatus

Abstract

The application provides an ultrasonic leakage detection device, which comprises a device main body, two positioning mechanisms and a communication part. The two positioning mechanisms each comprise a plurality of positioning units and a connecting section. The two connecting sections are coaxially connected with two ends of the device main body in the length direction. The plurality of positioning units in each positioning mechanism are arranged around the outer circumferential side of the connecting section. The positioning units are used for acquiring signals emitted by a leakage source of a to-be-detected body. The signals acquired by the positioning units in the two positioning mechanisms are used for positioning the leakage source together. The communication part is electrically connected with the two positioning mechanisms and connected with any one of the connecting sections. The communication part is used for sending signals to a signal processing device. The ultrasonic leakage detection device can improve the positioning accuracy of the leakage source and improve the positioning efficiency of the leakage source.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipeline detection equipment, and in particular to an ultrasonic leakage detection device. BACKGROUND

[0002] Gas storage wells involve alternating injection and production. Under the alternating stress condition of such cyclic injection and production, leakage is prone to occur in the wellbore, and then annulus pressure is caused, which brings safety hazards to the operation of the wellbore. Therefore, it is necessary to detect the entire wellbore by using certain technical means to determine the position and degree of leakage of the wellbore, so as to provide a basis for subsequent wellbore repair.

[0003] In the related art, an ultrasonic leakage detection device is used to detect the leakage position. The ultrasonic sensor in the device is used to capture high-frequency sound signals generated by micro-leakage in the downhole. The high-frequency sound signals are amplified by a signal amplification device, and then transmitted to the ground through a cable by a signal transmission device. The ground control processing system analyzes and processes the signals, and then determines the approximate position of the leakage source and the leakage degree of the high-pressure gas.

[0004] However, the positioning accuracy of the ultrasonic leakage detection device in the related art is low, which reduces the positioning efficiency. SUMMARY

[0005] The present application provides an ultrasonic leakage detection device to solve the technical problem of low positioning accuracy of the ultrasonic leakage detection device in the related art, which reduces the positioning efficiency.

[0006] To achieve the above purpose, the embodiments of the present application provide the following technical solutions:

[0007] The present application provides an ultrasonic leakage detection device, which comprises a device main body, two positioning mechanisms electrically connected to each other, and a communication part.

[0008] Each of the two positioning mechanisms comprises a plurality of positioning units and a connecting section. The two connecting sections are coaxially connected to the two ends of the device main body in the length direction. The plurality of positioning units in each positioning mechanism are arranged around the outer circumferential side of the connecting section. The positioning units are used to obtain signals emitted by a leakage source of a detection object. The signals obtained by the positioning units in the two positioning mechanisms are used together to locate the leakage source.

[0009] The communication part is electrically connected to the two positioning mechanisms and connected to any one of the connecting sections. The communication part is used to send signals to a signal processing device.

[0010] In one possible implementation, the positioning unit comprises a mounting plate and at least one ultrasonic sensor array.

[0011] The mounting plate is connected to the connecting section. The ultrasonic sensor array includes multiple ultrasonic sensors, which together form a hemispherical structure. The hemispherical structure is mounted on the mounting plate, and the outer surface of the hemispherical structure faces the object to be detected.

[0012] In one possible implementation, when the positioning unit has multiple ultrasonic sensor arrays, adjacent ultrasonic arrays are spaced apart on the mounting plate.

[0013] In one possible implementation, an annular groove is formed on the outer peripheral wall of the connecting segment, and multiple positioning units in the positioning mechanism are arranged in the annular groove around the periphery of the connecting segment.

[0014] In one possible implementation, a protective cover is provided over the annular groove, which is used to control the opening and closing of the groove opening.

[0015] In one possible implementation, the positioning mechanism further includes a signal amplification device and a signal storage device connected to each other, and the connecting section includes a first section, a second section and a third section connected in sequence, with an annular groove formed on the outer peripheral wall of the first section;

[0016] A signal amplification device is located between the second and third sections, and is used to amplify the signal obtained by the positioning unit.

[0017] The signal storage device is located on the side of the third segment away from the second segment. The signal storage device is used to store the amplified signal and also to send the stored signal to the communication unit.

[0018] One possible implementation also includes a seeker head;

[0019] The guide head is connected to one end of one of the connecting sections that is furthest from the main body of the device;

[0020] The communication section includes a fourth segment, a fifth segment, and a communication device located between the fourth and fifth segments. The fourth segment is connected to the end of another connecting segment away from the main body of the device.

[0021] In one possible implementation, the device body includes a first main body portion and a second main body portion that are detachably connected to each other;

[0022] The end of the first main body that is away from the second main body is connected to one of the connecting segments, and the end of the second main body that is away from the first main body is connected to the other connecting segment.

[0023] In one possible implementation, the device body also includes a connecting part, through which the first body part and the second body part are detachably connected.

[0024] In one possible implementation, two straightening mechanisms are also included, one of which is fixedly connected to the outer peripheral wall of the first main body, and the other is fixedly connected to the outer peripheral wall of the second main body. The ends of the two straightening mechanisms away from the main body of the equipment abut against the inner wall of the object to be tested.

[0025] This application provides an ultrasonic leak detection device. By connecting two connecting sections to the two ends of the device body along its length, and arranging multiple positioning units in each positioning mechanism around the periphery of the connecting sections, the signal acquisition range and positioning accuracy of the positioning structure can be improved. Furthermore, the signals acquired by the positioning units in the two positioning mechanisms are used together to locate the leak source, thereby improving the positioning accuracy and efficiency of the leak source. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of an ultrasonic leak detection device provided in an embodiment of this application;

[0028] Figure 2 for Figure 1 A schematic diagram of the state of an ultrasonic leak detection device when detecting a leak source in an object under test;

[0029] Figure 3 for Figure 1 A partial schematic diagram of point A in the middle;

[0030] Figure 4 for Figure 3 A schematic diagram of the cross-section at point B in the diagram;

[0031] Figure 5 for Figure 4 Front view of the positioning unit at point C;

[0032] Figure 6 for Figure 5 A cross-sectional schematic diagram of the ultrasonic sensor array at point D in the diagram.

[0033] Explanation of reference numerals in the attached figures:

[0034] 100 - Main body of the equipment;

[0035] 110 - First main body section; 120 - Second main body section; 130 - Connecting section;

[0036] 200 - Positioning mechanism;

[0037] 210 - Positioning unit; 220 - Connecting section; 230 - Signal amplification device;

[0038] 240 - Signal storage device;

[0039] 211-Mounting plate; 212-Ultrasonic sensor array; 213-Protective cover;

[0040] 221 - Annular groove; 222 - First section; 223 - Second section; 224 - Third section;

[0041] 2121 - Ultrasonic sensor; 2122 - Outer surface; 2131 - Semi-circular ring structure;

[0042] 2132 - Snap-fit ​​component; 2111 - Hemispherical protrusion;

[0043] 300 - Communications Department;

[0044] 320 - Fourth segment; 330 - Fifth segment; 310 - Communication device;

[0045] 400 - Detector;

[0046] 410 - Leakage source; 420 - Cement ring; 430 - Casing; 440 - Tubing;

[0047] 450 - Annular protective fluid;

[0048] 500-Guide Head;

[0049] 600 - Correction Agency;

[0050] 700-Cable. Detailed Implementation

[0051] Gas storage wells involve alternating injection and production. Under this cyclical stress condition, wellbore leakage is prone to occur, leading to annular pressure and posing safety hazards to wellbore operation. Therefore, it is necessary to use certain technical means to inspect the entire wellbore to determine the location and extent of leaks, providing a basis for subsequent wellbore repair.

[0052] Existing technologies use ultrasonic leak detection equipment to detect the location of leaks. The ultrasonic sensor is used to capture high-frequency sound signals generated by micro-leaks downhole. The high-frequency sound signals are amplified by a signal amplification device and then transmitted to the surface via a cable through a signal transmission device. The surface control and processing system analyzes and processes the signal to determine the approximate location of the leak source and the extent of high-pressure gas leakage.

[0053] However, ultrasonic leak detection equipment in related technologies has low accuracy in locating leak sources. This problem arises because existing ultrasonic leak detection equipment uses a single positioning mechanism. This mechanism determines the location of the leak source by judging the strength of the ultrasonic signal emitted from it. Since ultrasonic signals spread outwards in a circular wave pattern, the positioning mechanism receives the same signal intensity at the same radius. Therefore, with only one positioning mechanism, it's impossible to accurately determine the relative position of the ultrasonic leak detection equipment and the leak source. The equipment needs to be repeatedly adjusted near the leak source to obtain ultrasonic signals of varying intensities, and the location of the leak source is determined by these varying intensities, resulting in low positioning accuracy and reduced efficiency.

[0054] To address the aforementioned technical problems, this application provides an ultrasonic leak detection device. By connecting two connecting sections to the two ends of the device body along its length, and arranging multiple positioning units in each positioning mechanism around the periphery of the connecting sections, the signal acquisition range and positioning accuracy of the positioning structure can be improved. Furthermore, the signals acquired by the positioning units in the two positioning mechanisms are used together to locate the leak source, thereby improving the positioning accuracy and efficiency of the leak source.

[0055] To make the above-mentioned objectives, features, and advantages of the embodiments of this application more apparent and understandable, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0056] refer to Figure 1 and 2It should be noted that the object to be detected 400 can be a gas storage well. From the well wall inwards, the gas storage well may include a cement sheath 420, a casing 430, and a tubing 440, with annular protective fluid 450 between the casing 430 and the tubing 440. The leakage source 410 can be a leakage source 410 on the casing 430 or the tubing 440. In use, the ultrasonic leakage detection equipment needs to be placed in the gas storage well. The signal emitted by the leakage source 410 can be an ultrasonic signal, and the positioning unit 210 can acquire the ultrasonic signal emitted by the leakage source 410 from multiple phase angles. The ultrasonic leakage detection equipment is connected to a signal processing device, which can be an existing ultrasonic signal analysis and processing device. The signal processing device can analyze and judge the intensity, direction, and sound pressure amplitude of the ultrasonic signal acquired by the positioning unit 210. By judging the strength of the ultrasonic signal, the location of the leakage source 410 can be determined, and by judging the sound pressure amplitude of the ultrasonic wave, the degree of leakage at the leakage source 410 can be determined.

[0057] refer to Figure 1 In this embodiment, the ultrasonic leak detection device may include a device body 100 and two electrically connected positioning mechanisms 200. The device body 100 may be as follows: Figure 1 The illustrated columnar structure has its main body 100 connected at one end in its extending direction to one of the positioning mechanisms 200, and at the other end in its extending direction to the other positioning mechanism 200. The two positioning mechanisms 200 are located at opposite ends of the main body 100 in its extending direction. The ultrasonic leak detection equipment also includes a cable that passes through the center of the main body 100 along the extending direction of the columnar structure and is electrically connected to the two positioning mechanisms 200. By connecting the two positioning mechanisms 200 to opposite ends of the main body 100, a certain distance is maintained between them, preventing mutual interference when they receive signals from the same leak source 410, thereby improving the positioning accuracy of the two positioning mechanisms 200. When using the ultrasonic leak detection equipment, it needs to be inserted into the oil pipe 440 along the extending direction of the main body 100 of the columnar structure to locate the leak source 410.

[0058] refer to Figure 1 and Figure 3In some embodiments, the two positioning mechanisms 200 have the same structural composition. For example, each positioning mechanism 200 may include multiple positioning units 210 and connecting segments 220. The connecting segments 220 of the two positioning mechanisms 200 are respectively connected to both ends of the device body 100 in the extending direction, and the connecting segments 220 are coaxially connected to the device body 100. The connection between the connecting segments 220 and the device body 100 can be detachable. For example, the connecting segments 220 can be threaded to the end of the device body 100, thereby facilitating the disassembly and maintenance of the positioning mechanisms 200 and the device body 100, and facilitating the transportation of the ultrasonic leak detection equipment. The multiple positioning units 210 in the positioning mechanism 200 are arranged around the outer periphery of the connecting segments 220, so that the multiple positioning units 210 in the positioning mechanism 200 together form an annular positioning surface around the outer periphery of the connecting segments 220. When the ultrasonic leak detection device is placed on the object to be tested 400, the ultrasonic signal emitted by the leak source 410 can be obtained in 360° direction on the same horizontal plane through the annular positioning surface formed by multiple positioning units 210 in the positioning mechanism 200, thereby improving the positioning accuracy of the positioning mechanism 200.

[0059] refer to Figure 4 In an exemplary embodiment, the two positioning mechanisms 200 may have the same number of positioning units 210, for example, the number of positioning units 210 in both positioning mechanisms 200 may be 6.

[0060] refer to Figure 1 In some embodiments, the ultrasonic leak detection device may further include a communication unit 300, which is electrically connected to both positioning mechanisms 200 via cables. Specifically, the communication unit 300 is electrically connected to the positioning unit 210 in each positioning mechanism 200 via cables, and the communication unit 300 is connected to the connecting segment 220 of any one of the positioning mechanisms 200. For example, the communication unit 300 may be connected to the end of any positioning mechanism 200 away from the device body 100, and the communication unit 300 and the connecting segment 220 may be detachably connected via threads.

[0061] It is understood that the communication unit 300 and the positioning mechanism 200 can be electrically connected via cable 700. The communication unit 300 can further transmit the ultrasonic signal obtained by the positioning mechanism 200 to the signal processing device. The communication unit 300 and the signal processing device can be connected via cable to realize signal transmission. In an exemplary embodiment, the ultrasonic leakage detection device can be connected to an external device (e.g., a signal processing device) via cable 700. Parts of the ultrasonic leakage detection device (e.g., the connecting section 220 or the communication unit 300) are connected by cable 700, and the depth of the ultrasonic leakage detection device in the object to be detected 400 is controlled by controlling the length of the cable 700 lowered into the object to be detected 400.

[0062] refer to Figure 1 and Figure 2 In one specific embodiment, when it is necessary to detect a leak source 410 in a gas storage well, an ultrasonic leak detection device needs to be lowered into the well. When the ultrasonic signal detection range of the ultrasonic leak detection device is reached, multiple positioning units 210 in the positioning mechanism 200 can obtain the ultrasonic signal emitted by the leak source 410. Since the distance between each positioning unit 210 and the leak source 410 is different, the time and intensity of the ultrasonic signal obtained are also different. According to the principle of sound wave propagation, the closer to the emission point of the ultrasonic signal, the stronger the received signal. Therefore, by analyzing and calculating the ultrasonic signals obtained by each positioning unit 210 through the signal processing device, the approximate horizontal orientation of the positioning mechanism 200 relative to the leak source 410 can be obtained, and the strongest signal propagation path between the leak source 410 and the positioning mechanism 200 can be determined. A connection between the leak source and the positioning mechanism 200 can then be formed based on this signal propagation path. Both positioning mechanisms 200 are connected to the leakage source 410 by lines. The signal processing device combines the refraction effect of ultrasonic waves propagating in different media to correct the orientation of the leakage source 410 at the intersection of the lines formed between the two positioning mechanisms 200 and the leakage source 410, thereby determining the location of the leakage source 410.

[0063] refer to Figure 1 and Figure 2 In an exemplary embodiment, the object to be detected 400 can be as follows: Figure 2 The gas storage well shown has the following components on its outer perimeter wall from the outside to the inside: cement sheath 420, casing 430, annular protective fluid 450, and tubing 440. The leakage source 410 can be... Figure 2Point P is located on the wall of casing 430. When locating the leak source 410, the ultrasonic leak detection equipment must be placed vertically inside the oil pipe 440, with the two positioning mechanisms 200 arranged vertically. The two positioning mechanisms 200 transmit the acquired ultrasonic signals to the signal processing device via the communication unit 300. The signal processing device determines that point P is below the positioning mechanism 200 based on the ultrasonic signals emitted by point P obtained by multiple positioning units 210 in the upper positioning mechanism 200. Since the ultrasonic signal obtained by the left positioning unit 210 is the strongest, it can be determined that point P is located to the lower left of the upper positioning mechanism 200. Similarly, the signal processing device determines that point P is above the positioning mechanism 200 based on the ultrasonic signals emitted by point P obtained by multiple positioning units 210 in the lower positioning mechanism 200. Since the ultrasonic signal obtained by the left positioning unit 210 is the strongest, it can be determined that point P is located to the upper left of the lower positioning mechanism 200. The line connecting the signal propagation paths between the two positioning mechanisms 200 and point P is shown in Figure 430. Figure 2 As shown, the intersection of the two lines, combined with the refraction effect of ultrasonic waves propagating in different media, can be used to correct the orientation of the leakage source 410, thus determining the location of point P of the leakage source 410.

[0064] refer to Figure 1 and Figure 2 In some embodiments, the communication unit 300 can also be electrically connected to the two positioning mechanisms 200 via cables. The communication unit 300 is connected to either of the connection segments 220, and can be connected to the end of that connection segment 220 away from the device body 100. For example, when the ultrasonic leak detection device is used as follows... Figure 2 When the gas storage well is vertically inserted as shown, the communication unit 300 is connected to the top of the upper connecting section 220.

[0065] This application provides an ultrasonic leak detection device. By connecting two connecting sections 220 to both ends of the device body 100 along its length, and arranging multiple positioning units 210 in each positioning mechanism 200 around the periphery of the connecting section 220, the signal acquisition range and positioning accuracy of the positioning structure can be improved. Furthermore, the signals acquired by the positioning units 210 in the two positioning mechanisms 200 are used together to locate the leak source 410, thereby improving the positioning accuracy and efficiency of the leak source 410.

[0066] refer to Figure 1 and Figure 3Based on the above embodiments, each positioning unit 210 may include a mounting plate 211 and at least one ultrasonic sensor array 212, with the ultrasonic sensor array 212 mounted on the mounting plate 211. The mounting plate 211 may be a rectangular plate structure or a plate structure of other shapes, and this application does not limit it in this regard.

[0067] In some embodiments, one side of the mounting plate 211 is detachably connected to the connecting section 220, thereby facilitating the disassembly, maintenance, or replacement of the mounting plate 211 and the connecting section 220. For example, the mounting plate 211 and the connecting section 220 can be connected by adhesive, or by bolts or screws. The opposite side of the mounting plate 211 can be used to mount the ultrasonic sensor array 212, so that the ultrasonic sensor array 212 faces the outside of the connecting section 220, so that the ultrasonic sensor array 212 can better receive the signal emitted by the leakage source 410. The ultrasonic sensor array 212 and the mounting plate 211 can be connected and fixed by adhesive.

[0068] refer to Figure 3 and Figure 4 In one exemplary embodiment, when there are six positioning units 210, there are also six mounting plates 211, which are arranged axially around the connecting section 220. Each mounting plate 211 has at least one ultrasonic array. The more ultrasonic arrays there are, the higher the positioning accuracy of the positioning unit 210 for the signal emitted by the leakage source 410, and thus the higher the positioning accuracy of the positioning mechanism 200.

[0069] refer to Figure 4 to Figure 6 In some embodiments, the ultrasonic sensor array 212 is composed of multiple ultrasonic sensors 2121, which together form a hemispherical structure. This hemispherical structure has a recess, the bottom of which is the inner surface, and the outwardly protruding part is the outer surface 2122. One side of the recessed hemispherical structure is fitted onto the mounting plate 211, and the outer surface 2122 faces the object to be detected 400. In some embodiments, if the ultrasonic leak detection device is located in the oil pipe 440, the outer surface 2122 of the hemispherical structure faces the inner wall of the oil pipe 440. The multiple ultrasonic sensors 2121 in the hemispherical structure have different phases, and there are corresponding ultrasonic sensors 2121 for each phase on the entire hemispherical surface. This allows for the capture and analysis of ultrasonic signals from different directions. By further analyzing the intensity, orientation, and distance of the ultrasonic signals received by each ultrasonic sensor 2121, the signal processing device can determine the relative position between the positioning unit 210 and the leak source 410, thereby improving the positioning accuracy of the positioning unit 210.

[0070] refer to Figure 6In some implementations, the mounting plate 211 may have multiple spaced-apart hemispherical protrusions 2111 on the side facing the object to be tested 400. Each ultrasonic sensor array 212 may be disposed on the surface of the hemispherical protrusion, so that multiple ultrasonic sensors 2121 together form an ultrasonic sensor array 212 with a hemispherical structure. The multiple ultrasonic sensors 2121 in the ultrasonic sensor array 212 may be disposed one by one on the mounting plate 211 according to the outer surface of the hemispherical protrusions 2111 on the mounting plate 211. The ultrasonic sensors 2121 may be attached to the surface of the hemispherical protrusions 2111 with adhesive.

[0071] refer to Figure 5 Based on the above embodiments, each positioning unit 210 may have multiple ultrasonic sensor arrays 212. By setting multiple ultrasonic sensor arrays 212 in the positioning unit 210, the positioning accuracy of the positioning unit 210 can be further improved. For example, the ultrasonic sensor 2121 may be a miniature ultrasonic sensor 2121, thereby saving space to form multiple ultrasonic arrays on the mounting plate 211.

[0072] refer to Figure 5 Based on the above embodiments, if the positioning unit 210 has multiple ultrasonic sensor arrays 212, when the multiple ultrasonic sensor arrays 212 are mounted on the mounting plate 211, there can be a certain interval between two adjacent ultrasonic sensor arrays 212, thereby avoiding signal blockage between adjacent ultrasonic sensor arrays 212, which would prevent some ultrasonic sensors 2121 in the ultrasonic sensor array 212 from receiving the ultrasonic signal emitted by the leakage source 410. In an exemplary embodiment, if the ultrasonic sensor array 212 is a hemispherical structure, the interval between two adjacent ultrasonic arrays can be greater than or equal to the diameter of a hemispherical structure.

[0073] refer to Figure 1 , Figure 3 and Figure 4Based on the above embodiment, an annular groove 221 is formed on the outer peripheral wall of the connecting segment 220, and a plurality of positioning units 210 in the positioning mechanism 200 are arranged around the periphery of the connecting segment 220 in the annular groove 221. The cross-sectional shape of the annular groove 221 near the bottom wall of the connecting segment 220 can be a regular polygon, that is, each side of the regular polygon is a side of the bottom wall, and the number of sides of the polygon is the same as the number of positioning units 210. Each side is used to install a mounting plate 211. For example, if the number of positioning units 210 is 6, then there are 6 mounting plates 211, and the bottom wall of the annular groove 221 has six side surfaces, and the 6 mounting plates 211 are respectively installed on the 6 side surfaces of the annular groove 221. By providing an annular groove 221 on the outer peripheral wall of the connecting section 220 and installing the positioning unit 210 in the annular groove 221, the mounting plate 211 of the positioning unit 210 and the connecting section 220 are connected by surface contact, thereby improving the installation stability of the positioning unit 210 and the connecting section 220.

[0074] refer to Figure 3 and Figure 4 Based on the above embodiment, a protective cover 213 is provided on the annular groove 221. The protective cover 213 is used to control the opening and closing of the groove opening of the annular groove 221. By providing a protective cover 213 on the annular groove 221, the positioning unit 210 can be secured inside the annular groove 221, thereby reducing interference from the complex external environment on the signal acquisition of the positioning unit 210 and reducing damage to the positioning unit 210 from the external environment, thus improving the service life of the positioning unit 210.

[0075] refer to Figure 4 It is understood that the protective cover 213 and the connecting section 220 are detachably connected. In some embodiments, the protective cover 213 can be an annular structure, and this annular structure can be formed by two semi-circular annular structures 2131 interlocking with each other. The ends of the two semi-circular annular structures 2131 can be provided with snap-fit ​​members 2132 so that the two semi-circular annular structures 2131 are connected by snap-fit ​​members 2132. When it is necessary to fasten the protective cover 213 onto the annular groove 221, the two semi-circular annular structures need to be aligned with the position of the annular groove 221 and fixed by snap-fit ​​to close the opening of the annular groove 221 and cover the positioning unit 210 inside the annular groove 221.

[0076] Reference 1 and Figure 2 Based on the above embodiments, the positioning mechanism 200 may further include a signal amplification device 230 and a signal storage device 240 connected to each other. The connecting segment 220 includes a first segment 222, a second segment 223 and a third segment 224 connected in sequence. An annular groove 221 is formed on the outer peripheral wall of the first segment 222, and the positioning unit 210 is disposed in the annular groove 221 on the first segment 222.

[0077] refer to Figure 1 In some embodiments, a signal amplification device 230 is disposed between the second segment 223 and the third segment 224. The signal amplification device 230 amplifies the ultrasonic signal obtained by the positioning unit 210. After obtaining the ultrasonic signal, the positioning unit 210 sends the ultrasonic signal to the signal amplification device 230, which amplifies the ultrasonic signal to improve positioning accuracy. In some embodiments, the signal amplification device 230 can be an ultrasonic signal processing amplifier. It is understood that there is an installation space between the second segment 223 and the third segment 224 for mounting the signal amplification device 230, and the second segment 223 and the third segment 224 are detachably connected. For example, the first segment 222 and the second segment 223 are connected by threads, and the second segment 223 and the third segment 224 can also be connected by threads, thereby facilitating the maintenance and replacement of the signal amplification device 230.

[0078] refer to Figure 1 In a specific implementation, the signal storage device 240 is located on the side of the third segment 224 away from the second segment 223. The signal storage device 240 is used to store the amplified signal and also to transmit the stored signal to the communication unit 300. In an exemplary embodiment, the signal storage devices 240 in both positioning mechanisms 200 are connected to the communication unit 300 via cables 700. The signal amplified by the signal amplification device 230 is temporarily stored in the signal storage device 240. Then, the amplified signals stored in both signal storage devices 240 are transmitted together to the communication unit 300, and the communication unit 300 sends the signal to the signal processing device.

[0079] Continue to refer to Figure 1 In one exemplary embodiment, the two positioning mechanisms 200 in the ultrasonic leak detection device are arranged vertically. The connecting segments 220 in both positioning mechanisms 200 are each composed of a first segment 222, a second segment 223, and a third segment 224 connected sequentially. Specifically, the first segment 222 of the upper connecting segment 220 can be threadedly connected to the upper end of the device body 100, and the third segment 224 of the lower connecting segment 220 can be threadedly connected to the lower end of the device body 100. The communication unit 300 can be connected to the third segment 224 of the upper connecting segment 220 and is located on the side of the third segment 224 away from the device body 100.

[0080] refer to Figure 1 and Figure 2Based on the above embodiments, the ultrasonic leak detection device may further include a guide head 500, which is connected to one end of a connecting segment 220 away from the device body 100. In some embodiments, if the ultrasonic leak detection device is as follows... Figure 1 When placed in a gas storage well, the guide head 500 can be installed at the bottom of the ultrasonic leak detection equipment. Figure 1 In the middle section, the first segment 222 of the lower connecting section 220 is positioned away from the main body 100, and the guide head 500 can be connected to the end of the first segment 222 that is away from the main body 100. By providing the guide head 500, the ultrasonic leak detection equipment can be guided into the object to be tested 400, improving the ease of use of the ultrasonic leak detection equipment. It is understood that the guide head 500 and the connecting section 220 can be connected by threads, thereby facilitating the maintenance and replacement of the guide head 500.

[0081] refer to Figure 1 and Figure 2 In this embodiment, the communication unit 300 may include a fourth segment 320, a fifth segment 330, and a communication device 310. The communication device 310 is located between the fourth segment 320 and the fifth segment 330. The fourth segment 320 is connected to one end of another connecting segment 220 away from the device body 100. In some embodiments, there may be an installation space between the fourth segment 320 and the fifth segment 330. The communication device 310 is disposed in this installation space, and the fourth segment 320 and the fifth segment 330 can be detachably connected by threads, thereby facilitating the individual disassembly and maintenance of the communication device 310. If the ultrasonic leak detection equipment is placed in the gas storage well, the side communication unit 300 can be connected to the upper connecting segment 220, that is, the fourth segment 320 of the communication unit 300 is connected to one end of the third segment 224 away from the device body 100. In an exemplary embodiment, the fourth segment 320 and the third segment 224 can be detachably connected by threads.

[0082] refer to Figure 1 and Figure 2 Based on the above embodiments, the device body 100 includes a first main body portion 110 and a second main body portion 120 that are detachably connected to each other. One end of the first main body portion 110, away from the second main body portion 120, is connected to one of the connecting segments 220, and the other end of the second main body portion 120, away from the first main body portion 110, is connected to the other connecting segment 220. By dividing the device body 100 into the detachably connected first main body portion 110 and second main body portion 120, the ultrasonic leak detection device can be disassembled, thus facilitating the transportation and handling of the device. It is understood that the first main body portion 110 and the second main body portion 120 can be detachably connected by threads.

[0083] refer toFigure 1 Based on the above embodiments, the device body 100 may further include a connecting portion 130, through which the first main body 110 and the second main body 120 are detachably connected. By providing the connecting portion 130 between the first main body 110 and the second main body 120, and enabling the first main body 110 and the second main body 120 to be detachably connected through the connecting portion 130, the convenience of transporting and handling the device body 100 can be further improved, thereby improving the transport convenience of the ultrasonic leak detection device.

[0084] refer to Figure 1 and Figure 2 Based on the above embodiments, the ultrasonic leak detection device may further include two straightening mechanisms 600. One straightening mechanism 600 is fixedly connected to the outer peripheral wall of the first main body 110, and the other straightening mechanism 600 is fixedly connected to the outer peripheral wall of the second main body 120. The ends of the two straightening mechanisms 600 away from the main body 100 abut against the inner wall of the object to be tested 400. By fixing one straightening mechanism 600 to the outer peripheral wall of the first main body 110 and the second main body 120 respectively, and having the ends of the fixing mechanisms away from the main body 100 abut against the inner wall of the object to be tested 400, the main body 100 can always remain centered and fixed within the object to be tested 400. This prevents the ultrasonic leak detection device from tilting within the object to be tested 400, thereby improving the detection accuracy and operational stability of the ultrasonic leak detection device. The straightening mechanism 600 can be fixedly connected to the first main body 110 and the second main body 120 by welding or by bolts. Using bolts improves the portability of the ultrasonic leak detection device. The straightening mechanism 600 has a certain elastic deformation capacity. If the ultrasonic leak detection device is located inside the oil pipe 440, the straightening mechanism 600 can abut against the inner wall of the oil pipe 440. Because the straightening mechanism 600 has a certain deformation capacity, when it is necessary to move the ultrasonic leak detection device, it can be forced to deform to move the ultrasonic leak detection device inside the oil pipe 440. In an exemplary embodiment, the straightening mechanism 600 can be made of rubber with elastic deformation capacity, thereby improving the wear resistance and elastic deformation performance of the straightening mechanism 600.

[0085] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0086] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0087] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part by context, the term "one or more" as used in the text can be used to describe any feature, structure, or characteristic of the singular meaning, or a combination of features, structures, or characteristics of the plural meaning. Similarly, at least in part by context, terms such as "a" or "the" can also be understood to convey either singular or plural usage.

[0088] It should be readily understood that the terms “on,” “above,” and “on top of” in this disclosure should be interpreted in the broadest possible sense, such that “on” means not only “directly on something” but also “on something” with an intermediate feature or layer therebetween, and that “above” or “on top of” means not only “on top of something” but also “on top of something” without an intermediate feature or layer therebetween (i.e., directly on something).

[0089] Furthermore, for ease of explanation, spatially relative terms such as "below," "below," "under," "above," and "above" may be used to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation other than those shown in the figures. The device may have other orientations (rotated 90 degrees or in other orientations), and the spatially relative descriptive terms used herein may be interpreted accordingly.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An ultrasonic leak detection device, characterized in that, It includes the main body of the equipment, two electrically connected positioning mechanisms, and a communication unit; Both positioning mechanisms include multiple positioning units and connecting sections. The two connecting sections are coaxially connected to both ends of the device body in the length direction. The multiple positioning units in each positioning mechanism are arranged around the outer periphery of the connecting section. The positioning units are used to acquire the signal emitted by the leakage source of the object to be detected. The signals acquired by the positioning units in the two positioning mechanisms are used together to locate the leakage source. The communication unit is electrically connected to the two positioning mechanisms and to any one of the connecting segments. The communication unit is used to send the signal to the signal processing device. The positioning unit includes a mounting plate and at least one ultrasonic sensor array; The mounting plate is connected to the connecting section. The ultrasonic sensor array includes multiple ultrasonic sensors, which together form a hemispherical structure. The hemispherical structure is disposed on the mounting plate, and the outer surface of the hemispherical structure faces the object to be detected. The mounting plate has multiple spaced hemispherical protrusions on the side facing the object to be tested, and the ultrasonic sensor array is disposed on the surface of the hemispherical protrusions. The positioning mechanism further includes a signal amplification device and a signal storage device connected to the positioning unit, and the connecting segment includes a first segment, a second segment and a third segment connected in sequence. The signal amplification device is disposed between the second segment and the third segment, and the signal amplification device is used to amplify the signal obtained by the positioning unit. The signal storage device is located on the side of the third segment away from the second segment. The signal storage device is used to store the amplified signal and also to send the stored signal to the communication unit.

2. The ultrasonic leak detection device according to claim 1, characterized in that, When the positioning unit has multiple ultrasonic sensor arrays, two adjacent ultrasonic arrays are spaced apart on the mounting plate.

3. The ultrasonic leak detection device according to claim 1, characterized in that, The outer peripheral wall of the connecting section is provided with an annular groove, and a plurality of positioning units in the positioning mechanism are arranged around the periphery of the connecting section in the annular groove.

4. The ultrasonic leak detection device according to claim 3, characterized in that, A protective cover is provided on the annular groove, and the protective cover is used to control the opening and closing of the annular groove.

5. The ultrasonic leak detection device according to claim 4, characterized in that, The annular groove is formed on the outer peripheral wall of the first section.

6. The ultrasonic leak detection device according to any one of claims 1 to 5, characterized in that, It also includes a seeker head; The guide head is connected to one end of one of the connecting segments that is away from the main body of the device; The communication unit includes a fourth segment, a fifth segment, and a communication device, the communication device being located between the fourth segment and the fifth segment, the fourth segment being connected to one end of another of the connecting segments away from the device body.

7. The ultrasonic leak detection device according to any one of claims 1 to 5, characterized in that, The main body of the device includes a first main body and a second main body that are detachably connected to each other. The end of the first main body portion away from the second main body portion is connected to one of the connecting segments, and the end of the second main body portion away from the first main body portion is connected to the other of the connecting segments.

8. The ultrasonic leak detection device according to claim 7, characterized in that, The main body of the device also includes a connecting part, through which the first main body and the second main body are detachably connected.

9. The ultrasonic leak detection device according to claim 8, characterized in that, It also includes two straightening mechanisms, one of which is fixedly connected to the outer peripheral wall of the first main body, and the other of which is fixedly connected to the outer peripheral wall of the second main body. The ends of the two straightening mechanisms away from the main body of the equipment abut against the inner wall of the object to be tested.

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