Electromagnetic ultrasonic detection device for industrial pipeline defects

Abstract

The invention discloses an electromagnetic ultrasonic detection device for industrial pipeline defects, the electromagnetic ultrasonic detection device comprises a locking mechanism, a detection mechanism, a moving mechanism and a sliding mechanism, the moving mechanism comprises a first rack and a magnetic wheel, first motors are fixedly mounted at four corners of the inner wall of the first rack and four corners of the inner wall of the magnetic wheel, one end of each first motor is connected with the magnetic wheel, and the other end of each first motor is connected with the sliding mechanism; according to the device, through structures such as a connecting buckle, a connecting pin, a first sliding rail and a sliding block, the device can easily adapt to pipelines with different diameters, the adaptability and the flexibility of the device are improved, detection is conducted through the electromagnetic ultrasonic transducer principle, ultrasonic signals can be rapidly and accurately excited and received, and the detection accuracy is improved. And non-contact and high-precision detection is carried out on defects in the pipeline. Therefore, the detection efficiency and accuracy are greatly improved, and the possibility of personal errors and missing detection is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of electromagnetic ultrasonic detection devices for pipeline defects, and in particular to an electromagnetic ultrasonic detection device for industrial pipeline defects. Background Art

[0002] In the industrial sector, pipelines are essential infrastructure for fluid transportation, and their safety and integrity are crucial to the smooth operation of production activities. Therefore, regular and efficient defect detection of industrial pipelines is essential to ensure production safety and prevent accidents. Traditional pipeline defect detection methods include ultrasonic testing, radiographic testing, and magnetic particle testing. However, these methods, to varying degrees, suffer from complex operations, low detection efficiency, high operator skill requirements, and potential environmental pollution.

[0003] In recent years, electromagnetic ultrasonic testing (EUT) has become a research hotspot in pipeline defect detection due to its advantages, including non-contact operation, the absence of coupling agents, and compatibility with a wide range of materials. EUT devices use the principle of electromagnetic induction to excite ultrasonic waves on the pipeline surface and exploit the propagation characteristics of these waves within the pipeline to detect internal defects such as cracks and corrosion pits. However, existing EUT devices still face challenges in practical application.

[0004] Specifically, most existing electromagnetic ultrasonic inspection devices primarily consist of a detection probe and an electromagnetic ultrasonic generator. These devices typically require manual handheld operation for pipeline inspection. However, in complex industrial environments, pipeline installation locations are often diverse, ranging from low, easily accessible sections to high, inaccessible areas. For high-altitude industrial pipelines, traditional handheld electromagnetic ultrasonic inspection devices are not only difficult to operate but also pose potential safety hazards, such as the risk of falling from height. Furthermore, their detection efficiency is low, making it difficult to meet the needs of large-scale, high-efficiency pipeline inspection. Summary of the Invention

[0005] To achieve these objects and other advantages according to the present invention, a preferred embodiment of the present invention provides an electromagnetic ultrasonic detection device for industrial pipeline defects, comprising a locking mechanism, a detection mechanism, and a moving mechanism;

[0006] Wherein, the mobile mechanism is movable and the detection mechanism is installed on the mobile structure;

[0007] The detection mechanism includes an electric push rod, which is installed at the top of the moving mechanism, and one end of the moving mechanism is connected to an electromagnetic detector, one end of the electromagnetic detector is connected to a detection probe, and one end of the moving mechanism is connected to a locking mechanism;

[0008] The locking mechanism includes a connecting pin, a connecting buckle, and a fixed block. The top of the fixed block is movably connected to a connecting ring. One end of the fixed block is connected to a connecting pin. Multiple groups of connecting buckles are connected end to end by connecting the connecting pins. Brackets are fixedly installed on the outer surfaces of both sides of the connecting buckle.

[0009] A U-shaped limiting buckle is also installed on one side of the moving mechanism for limiting the connection of the connecting pin, and a bolt is movably installed on the outer surface of the limiting buckle, and a nut is movably installed on the outer surface of the bolt.

[0010] Preferably, the moving mechanism includes a first frame and a magnetic wheel, and a first motor is fixedly installed on the four corners of the inner wall of the first frame and the magnetic wheel, one end of the first motor is connected to the magnetic wheel, a first shell is fixedly installed on the top of the first frame, and a battery is installed on the inner wall of the first shell, and a connecting plate is fixedly installed on one side of the first shell, a second shell is provided on the outer surface of the connecting plate, and the bottom end of the second shell is connected to the second frame, the electric push rod is installed on the top of the second shell, and one end of the second shell is connected to an electromagnetic detector, and a U-shaped limit buckle is also installed on one side of the first frame.

[0011] Preferably, a first slide rail is installed on the top of the fixed block, and a sliding block is movably installed on the outer surface of the first slide rail. The sliding block can move along the length direction of the first slide rail, and the top of the sliding block is connected to a connecting ring.

[0012] Preferably, a through slot is provided at the bottom end of the second frame, and two groups of second slide rails are fixedly installed in the through slot, and an electromagnetic detector is movably installed between the two groups of second slide rails.

[0013] Preferably, a mounting groove is provided on one side of the connecting plate, and a movable mechanism is provided in the mounting groove, the movable mechanism includes two groups of fixed seats, and the two groups of fixed seats are fixedly installed in the mounting groove, the outer surfaces of the two groups of fixed seats are provided with circular through grooves, and the inner walls of the circular through grooves are movably installed with screw rods, one side of the screw rod is connected to the fixed seat, and the outer surface of the screw rod is movably installed with a sliding seat, one side of the sliding seat is connected to a limiting plate, and one side of the limiting plate is connected to the second shell.

[0014] Preferably, a protective plate is fixedly mounted on one side of the mounting groove, and a sliding groove is provided on the outer surface of the protective plate, and a limit plate is movably engaged with the inner wall of the sliding groove.

[0015] Preferably, the outer surface of the magnetic wheel is wrapped with rubber.

[0016] Preferably, one end of the bracket is triangular.

[0017] The present invention has at least the following beneficial effects:

[0018] This invention utilizes structures such as a connecting buckle, connecting pin, first slide rail, and sliding block to enable the device to easily adapt to pipes of varying diameters, improving its adaptability and flexibility. Furthermore, through the principle of electromagnetic ultrasonic transducers (EMAT), it can quickly and accurately excite and receive ultrasonic signals, enabling non-contact, high-precision detection of defects within the pipe. This significantly improves detection efficiency and accuracy, reduces the possibility of human error and missed detections, and utilizes non-contact detection technology and automated control methods, eliminating the need for operators to directly contact the pipe or enter hazardous areas to complete the inspection, significantly enhancing the safety of the inspection process.

[0019] The invention achieves highly automated control over the entire detection process, from device fixing and movement to detection probe positioning, and detection signal processing and transmission. This significantly reduces the complexity and labor intensity of manual operations and improves work efficiency.

[0020] The rubber layer on the outer surface of the magnetic wheel not only increases friction with the pipe surface, ensuring the stability of the device during movement, but also protects the pipe surface, thus avoiding damage to the pipe caused by friction, collision, and other factors in traditional detection methods.

[0021] Other advantages, objectives and features of the present invention will be reflected in part from the following description and will be understood by those skilled in the art through study and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the first three-dimensional structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the second three-dimensional structure of the present invention;

[0024] Figure 3 This is a first explosion diagram of the present invention;

[0025] Figure 4 This is a second explosion diagram of the present invention;

[0026] Figure 5 For the present invention Figure 1 A in the middle is an enlarged schematic diagram;

[0027] Figure 6 For the present invention Figure 1 The enlarged schematic diagram of point B in the middle;

[0028] Figure 7 For the present invention Figure 1 The enlarged schematic diagram of point C in the middle;

[0029] Figure 8 For the present invention Figure 3Enlarged schematic diagram at point D in the middle.

[0030] In the figure: 1. first frame; 2. magnetic wheel; 3. second frame; 4. first shell; 5. connecting plate; 6. second shell; 7. electric push rod; 8. protective plate; 9. connecting buckle; 911. connecting ring; 912. connecting pin; 913. universal wheel; 914. bracket; 711. fixing block; 712. first slide rail; 713. sliding block; 611. limiting buckle; 612. bolt; 613. nut; 411. sliding seat; 412. limiting plate; 413. screw rod; 414. second motor; 415. fixing seat; 311. second slide rail; 312. detection probe. DETAILED DESCRIPTION

[0031] The present invention will be described in further detail below in conjunction with the accompanying drawings so that those skilled in the art can implement the invention with reference to the description.

[0032] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are for illustrative purposes only, and those skilled in the art will readily appreciate other obvious variations. The basic principles of the present invention defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0033] Those skilled in the art should understand that, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, which 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, the above terms should not be understood as limiting the present invention.

[0034] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0035] like Figure 1 As shown, a preferred embodiment of the present invention provides an electromagnetic ultrasonic detection device for industrial pipeline defects, comprising a locking mechanism, a detection mechanism, and a moving mechanism;

[0036] Wherein, the mobile mechanism is movable and the detection mechanism is installed on the mobile structure;

[0037] The detection mechanism includes an electric push rod 7, which is installed at the top of the moving mechanism, and one end of the moving mechanism is connected to an electromagnetic detector, one end of the electromagnetic detector is connected to a detection probe 312, and one end of the moving mechanism is connected to a locking mechanism;

[0038] The locking mechanism includes a connecting pin 912, a connecting buckle 9, and a fixed block 711. The top of the fixed block 711 is movably connected to a connecting ring 911. One end of the fixed block 711 is connected to a connecting pin. Multiple sets of connecting buckles are connected end to end by connecting the connecting pins. Brackets 914 are fixedly installed on the outer surfaces of both sides of the connecting buckle 9.

[0039] A U-shaped limiting buckle 611 is further installed on one side of the moving mechanism for limiting the connection of the connecting pin, and a bolt 612 is movably installed on the outer surface of the limiting buckle 611, and a nut 613 is movably installed on the outer surface of the bolt 612.

[0040] In the above technical solution, the detection device can be quickly wrapped and fixed to the surface of pipes of different diameters through a chain-type locking structure composed of connecting buckles and connecting pins. The mechanical fastening of the limit buckles, bolts and nuts ensures that the device does not move during the detection process. The setting of the bracket increases the contact points between the locking structure and the pipe, improving the fixing stability. This design does not require frequent manual adjustment of the fixing method, which not only improves detection efficiency, but also provides a stable detection reference for the detection probe, avoiding ultrasonic signal errors caused by device shaking, thereby improving detection accuracy and reliability.

[0041] In another technical solution, the moving mechanism includes a first frame 1 and a magnetic wheel 2, and a first motor is fixedly installed at the four corners of the inner walls of the first frame 1 and the magnetic wheel 2, one end of the first motor is connected to the magnetic wheel 2, a first shell 4 is fixedly installed on the top of the first frame 1, and a battery is installed on the inner wall of the first shell 4, and a connecting plate 5 is fixedly installed on one side of the first shell 4, the outer surface of the connecting plate 5 is provided with a second shell 6, and the bottom end of the second shell 6 is connected to the second frame 3, the electric push rod 7 is installed at the top of the second shell 6, and one end of the second shell 6 is connected to an electromagnetic detector, and a U-shaped limit buckle 611 is also installed on one side of the first frame 1.

[0042] In the above technical solution, the combination of the magnetic wheel and the first motor forms an automated mobile unit. By magnetically adsorbing the pipe surface, it can move stably on vertical or overhead pipes without the need for human intervention, thus reducing safety risks. The battery in the first housing provides an independent power source for the device, avoiding cable constraints and improving mobility. The connecting plate and the second housing integrate the detection mechanism with the mobile mechanism, allowing the detection probe to move synchronously with the mobile mechanism, realizing an automated "walk-and-check" process and significantly improving detection efficiency. The setting of the limit buckle further ensures the stability of the connection between the mobile mechanism and the locking mechanism, preventing the device from falling off during movement.

[0043] In another technical solution, a first slide rail 712 is installed on the top of the fixed block 711, and a sliding block 713 is movably installed on the outer surface of the first slide rail 712. The sliding block can move along the length direction of the first slide rail, and the top of the sliding block 713 is connected to a connecting ring 911.

[0044] In the above technical solution, the combination of the first slide rail and the sliding block forms an adjustable connection structure. By lateral movement of the sliding block on the slide rail, the position of the connecting ring can be flexibly adjusted, thereby changing the radius of the connecting buckle chain. This design allows the device to quickly adapt to pipes of different diameters without replacing any accessories, significantly improving versatility and ease of operation. Compared to the traditional method of fixing clamps that requires manual measurement of pipe diameters and replacement of accessories, this solution achieves "one-click adaptation" through mechanical adjustment, saving time and costs, and is particularly suitable for large-scale pipeline inspection scenarios.

[0045] In another technical solution, a through slot is formed at the bottom end of the second frame 3 , and two sets of second slide rails 311 are fixedly installed in the through slot, and an electromagnetic detector is movably installed between the two sets of second slide rails 311 .

[0046] In the above technical solution, the through groove at the bottom end of the second frame and the second slide rail provide a lateral movement track for the electromagnetic detector, allowing it to slide freely between the two sets of slide rails. By manually or electrically controlling the position of the electromagnetic detector, the lateral spacing of the detection probe on the pipeline surface can be accurately adjusted (such as moving along the circumference of the pipeline) to ensure full coverage of defects such as pipeline welds and corrosion pits. This design avoids the detection blind spots caused by the fixed position of the probe, and is particularly suitable for the key inspection of local defects in the pipeline, thereby improving the comprehensiveness and accuracy of the detection. At the same time, the slide rail structure provides a stable movement guide to prevent the probe from shaking during the detection process and ensure the stability of the ultrasonic signal.

[0047] In another technical solution, a mounting groove is provided on one side of the connecting plate 5, and a movable mechanism is provided in the mounting groove, and the movable mechanism includes two groups of fixed seats 415, and the two groups of fixed seats 415 are fixedly installed in the mounting groove, and the outer surfaces of the two groups of the fixed seats 415 are provided with circular through grooves, and the inner wall of the circular through groove is movably installed with a screw rod 413, one side of the screw rod 413 is connected to the fixed seat 415, and the outer surface of the screw rod 413 is movably installed with a sliding seat 411, one side of the sliding seat 411 is connected to a limiting plate 412, and one side of the limiting plate 412 is connected to the second shell 6.

[0048] In the above technical solution, the screw transmission mechanism is driven by a motor, which can accurately control the movement of the sliding seat in the circular groove of the fixed seat, thereby driving the limit plate and the second shell to move laterally. This design realizes the automatic front and rear adjustment of the detection mechanism on the surface of the pipeline (such as moving along the axial direction of the pipeline), and the positioning accuracy can reach the millimeter level. Compared with the traditional manual adjustment method, the screw transmission has the advantages of smooth movement and small error, and is particularly suitable for scenarios that require high-frequency adjustment of the detection position (such as scanning areas with dense defects in the pipeline). At the same time, the installation groove integrates the transmission mechanism into the interior of the connecting plate, saving space and improving the compactness of the overall structure of the device.

[0049] In another technical solution, a protective plate 8 is fixedly installed on one side of the installation groove, and a sliding groove is provided on the outer surface of the protective plate 8, and the inner wall of the sliding groove is movably engaged with a limit plate 412.

[0050] In the above technical solution, the protective plate covers the screw, sliding seat, and other transmission components within the mounting groove, effectively blocking pollutants such as dust and liquid splashes in the industrial environment, reducing component wear and extending the service life of the device. The interlocking design of the slide and the limit plate not only provides a guide for the limit plate's movement, but also ensures that the protective plate does not affect the normal movement of the detection mechanism, achieving the dual functions of "protection + movement". This structure requires no additional maintenance, reducing the cost of the device and is particularly suitable for long-term stable operation in harsh industrial environments such as those with high dust and humidity.

[0051] In another technical solution, the outer surface of the magnetic wheel 2 is wrapped with rubber.

[0052] In the above technical solution, the rubber layer provides dual advantages for the magnetic wheel: First, the rubber's elastic properties cushion the rigid contact between the magnetic wheel and the pipe surface, preventing scratches on the pipe surface caused by friction or collision, thereby protecting the pipe's integrity. Second, the rubber's high coefficient of friction significantly improves the magnetic wheel's adhesion to the pipe surface, effectively preventing slippage in humid or oily environments and ensuring the stability and reliability of the device's movement. Furthermore, the rubber layer can be modified with materials of varying hardness (such as silicone or polyurethane) to accommodate pipes of varying surface roughness, further enhancing the environmental adaptability of the mobile mechanism.

[0053] In another technical solution, one end of the bracket 914 is triangular in shape.

[0054] In the above technical solution, the triangular structure utilizes the mechanical stability principle of the triangle to evenly distribute the weight of the device and the impact force during movement to the three fulcrums of the bracket, effectively resisting horizontal and vertical loads and preventing the bracket from deforming or the device from overturning.

[0055] Working Principle: First, multiple sets of connecting buckles 9 are connected into a chain shape via connecting pins 912 and wrapped around the outer surface of the industrial pipeline to be inspected. This initially secures the first frame 1 and the second frame 3 to the pipeline. Next, one end of the chain is engaged with the limit buckle 611 on one side of the first frame 1 via the connecting pin 912, and fastened with bolts 612 and nuts 613 to ensure that the entire device is firmly fixed to the pipeline. Simultaneously, the position of the connecting ring 911 is adjusted using the first slide rail 712 and sliding block 713 on the fixing block 711 to accommodate pipelines of different diameters. Multiple sets of universal wheels 913 further enhance the fit and stability between the device and the pipeline. The magnetic wheels 2, mounted on the first frame 1 and driven by the first motor, are activated. Due to their horizontal arrangement, they can drive the entire device to move along the pipeline surface. The rubber layer on the outer surface of the magnetic wheel 2 not only increases friction but also protects the pipe surface from damage. Simultaneously, the second motor 414 controls the rotation of the screw rod 413, driving the sliding seat 411 within the circular groove of the fixed seat 415. The sliding seat 411 is connected to the second housing 6 via a stop plate 412, enabling the detection mechanism to move back and forth laterally on the pipe surface, precisely positioning the detection position. Once the detection position is determined, the electric push rod 7 is activated, pushing the electromagnetic detector toward the pipe surface. The electromagnetic detector, consisting of core components such as a wireless communication module, a CPU module, and a signal processing module, efficiently and accurately processes detection signals. The detection probe 312 at one end of the electromagnetic detector is in close contact with the pipe surface. Using the electromagnetic ultrasonic transducer (EMAT) principle, it excites ultrasonic waves on the pipe surface and receives reflected signals. These signals are processed by the signal processing module, analyzed by the CPU module, and ultimately transmitted via the wireless communication module to a remote terminal or display screen for real-time viewing and analysis by the operator.

[0056] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. An electromagnetic ultrasonic detection device for industrial pipeline defects, characterized in that: Including locking mechanism, detection mechanism, and moving mechanism; Wherein, the mobile mechanism is movable and the detection mechanism is installed on the mobile structure; The detection mechanism includes an electric push rod, which is installed at the top of the moving mechanism, and one end of the moving mechanism is connected to an electromagnetic detector, one end of the electromagnetic detector is connected to a detection probe, and one end of the moving mechanism is connected to a locking mechanism; The locking mechanism includes a connecting pin, a connecting buckle, and a fixed block. The top of the fixed block is movably connected to a connecting ring. One end of the fixed block is connected to a connecting pin. Multiple groups of connecting buckles are connected end to end by connecting the connecting pins. Brackets are fixedly installed on the outer surfaces of both sides of the connecting buckle. A U-shaped limiting buckle is also installed on one side of the moving mechanism for limiting the connection of the connecting pin, and a bolt is movably installed on the outer surface of the limiting buckle, and a nut is movably installed on the outer surface of the bolt.

2. The electromagnetic ultrasonic detection device for industrial pipeline defects according to claim 1, characterized in that: The moving mechanism includes a first frame and a magnetic wheel, and a first motor is fixedly installed at the four corners of the inner wall of the first frame and the magnetic wheel, one end of the first motor is connected to the magnetic wheel, a first shell is fixedly installed on the top of the first frame, and a battery is installed on the inner wall of the first shell, and a connecting plate is fixedly installed on one side of the first shell, a second shell is provided on the outer surface of the connecting plate, and the bottom end of the second shell is connected to the second frame, the electric push rod is installed on the top of the second shell, and one end of the second shell is connected to an electromagnetic detector, and a U-shaped limit buckle is also installed on one side of the first frame.

3. The electromagnetic ultrasonic detection device for industrial pipeline defects according to claim 1, characterized in that: A first slide rail is installed on the top of the fixed block, and a sliding block is movably installed on the outer surface of the first slide rail. The sliding block can move along the length direction of the first slide rail, and the top of the sliding block is connected to a connecting ring.

4. The electromagnetic ultrasonic detection device for industrial pipeline defects according to claim 1, characterized in that: A through slot is formed at the bottom end of the second frame, and two groups of second slide rails are fixedly installed in the through slot, and an electromagnetic detector is movably installed between the two groups of second slide rails.

5. The electromagnetic ultrasonic detection device for industrial pipeline defects according to claim 1, characterized in that: A mounting groove is provided on one side of the connecting plate, and a movable mechanism is provided in the mounting groove. The movable mechanism includes two groups of fixed seats, and the two groups of fixed seats are fixedly installed in the mounting groove. The outer surfaces of the two groups of fixed seats are provided with circular through grooves, and a screw rod is movably installed on the inner wall of the circular through groove. One side of the screw rod is connected to the fixed seat, and a sliding seat is movably installed on the outer surface of the screw rod. One side of the sliding seat is connected to a limiting plate, and one side of the limiting plate is connected to the second shell.

6. The electromagnetic ultrasonic detection device for industrial pipeline defects according to claim 1, characterized in that: A protective plate is fixedly mounted on one side of the mounting groove, and a sliding groove is provided on the outer surface of the protective plate, and a limiting plate is movably engaged with the inner wall of the sliding groove.

7. The electromagnetic ultrasonic detection device for industrial pipeline defects according to claim 1, characterized in that: The outer surface of the magnetic wheel is wrapped with rubber.

8. The electromagnetic ultrasonic detection device for industrial pipeline defects according to claim 1, characterized in that: One end of the bracket is triangular.

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