Pipeline magnetic flux leakage detection probe

Abstract

The utility model relates to the technical field of pipeline magnetic flux leakage detection, and discloses a pipeline magnetic flux leakage detection probe which comprises a fixing plate, a sliding rod is fixedly connected to the fixing plate, a plurality of fixing blocks are fixedly connected to the sliding rod, connecting rods are rotationally connected to the fixing blocks, an adjusting assembly is arranged on the outer wall of the sliding rod, and the adjusting assembly is arranged on the outer wall of the sliding rod. A mounting plate is fixedly connected to the side, away from the fixing plate, of the sliding rod, a plurality of detection heads are arranged on the outer wall of the mounting plate, a plurality of protection assemblies are arranged in the mounting plate, the adjusting assembly comprises a sliding sleeve, the interior of the sliding sleeve is slidably connected to the outer wall of the sliding rod, and a plurality of rotating frames are rotatably connected to the sliding sleeve. According to the utility model, the structure of the probe can be adjusted in real time according to the curvature and inner diameter change of the pipeline through the sliding adjustment on the sliding rod and the angle change of the connecting rod and the rotating frame, so that the probe is ensured to be tightly attached to the surface of the pipeline, and the detection precision and stability are improved.

Description

Technical Field

[0001] This utility model relates to the field of pipeline magnetic flux leakage detection technology, and in particular to a pipeline magnetic flux leakage detection probe. Background Technology

[0002] With industrial development, pipelines, as crucial facilities for transporting various fluids, have been widely used in industries such as chemical, petroleum, and natural gas. During long-term operation, pipelines often encounter problems such as cracks, corrosion, and wear. These issues can lead to magnetic leakage, thus affecting the operational safety of the pipeline. Therefore, timely and effective detection of internal defects, cracks, and corrosion in pipelines is essential for ensuring their safe operation.

[0003] Traditional pipeline magnetic flux leakage (MFL) testing equipment mostly relies on manual operation or simple structures, making it difficult to handle various pipeline shapes, especially curved and irregular pipelines. Existing pipeline MFL detection technologies generally depend on fixed structures, which cannot flexibly adapt to different pipeline sizes and shapes, often leading to problems such as poor probe-to-pipe surface contact or inaccurate signal acquisition during the testing process. Therefore, a pipeline MFL detection probe is proposed. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a pipeline magnetic flux leakage detection probe, which aims to improve the problem that the existing technology is unable to cope with various morphological changes in pipelines.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a pipeline magnetic flux leakage detection probe, comprising a fixed plate, a sliding rod fixedly connected to the fixed plate, a plurality of fixed blocks fixedly connected to the sliding rod, a connecting rod rotatably connected to the fixed blocks, an adjustment assembly provided on the outer wall of the sliding rod, an mounting plate fixedly connected to the side of the sliding rod away from the fixed plate, a plurality of probes provided on the outer wall of the mounting plate, and a plurality of protective components provided inside the mounting plate;

[0006] The adjustment assembly includes a sliding sleeve, which is slidably connected to the outer wall of the slide rod. Multiple rotating brackets are rotatably connected to the sliding sleeve. A limit block is fixedly connected to the side of the sliding sleeve away from the fixed plate, and a first spring is fixedly connected to the side of the limit block away from the sliding sleeve.

[0007] As a further description of the above technical solution:

[0008] The protective assembly includes multiple blocking blocks, which are slidably connected to the inner wall of the mounting plate. A connecting rod is fixedly connected to one side of the blocking block, and a second spring is fixedly connected to the other side of the blocking block. The side of the connecting rod away from the blocking block is fixedly connected to the inside of the probe head.

[0009] As a further description of the above technical solution:

[0010] A sensor is provided on the side of the mounting plate away from the slide bar.

[0011] As a further description of the above technical solution:

[0012] The end of the connecting rod away from the fixed block is rotatably connected to the middle of the slide rod, and a plurality of movable wheels are fixedly connected to the side of the slide rod away from the rotating frame.

[0013] As a further description of the above technical solution:

[0014] The end of the first spring away from the limiting block is fixedly connected to the mounting plate.

[0015] As a further description of the above technical solution:

[0016] The outer wall of the probe is slidably connected inside the mounting plate.

[0017] As a further description of the above technical solution:

[0018] The end of the second spring away from the blocking block is fixedly connected to the inner wall of the mounting plate.

[0019] This utility model has the following beneficial effects:

[0020] 1. In this invention, by adjusting the sliding rod and changing the angles of the connecting rod and rotating frame, the probe can adjust its structure in real time according to the curvature and inner diameter changes of the pipe, ensuring a tight fit with the pipe surface, thereby improving the accuracy and stability of the detection. This design makes the probe suitable for detecting various types of pipes, including curved or irregularly shaped pipes.

[0021] 2. In this invention, when the probe is subjected to external pressure or impact, the blocking block buffers the external force through sliding, preventing the probe from being directly damaged by excessive impact. Simultaneously, the second spring further enhances the buffering effect, ensuring that the blocking block returns to its original position after the external force disappears. These protective measures significantly improve the probe's service life and operational stability, reducing maintenance and replacement costs. Attached Figure Description

[0022] Figure 1 This is a perspective view of a pipeline magnetic flux leakage detection probe proposed in this utility model;

[0023] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0024] Figure 3This is a cross-sectional view of the mounting plate of a pipeline magnetic flux leakage detection probe proposed in this utility model.

[0025] Legend:

[0026] 1. Fixing plate; 2. Sliding rod; 3. Fixing block; 4. Connecting rod; 5. Sliding sleeve; 6. Limiting block; 7. Rotating frame; 8. First spring; 9. Mounting plate; 10. Sensor; 11. Blocking block; 12. Connecting rod; 13. Detector head; 14. Second spring. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Reference Figures 1-3 This utility model provides an embodiment of a pipeline magnetic flux leakage detection probe, including a fixing plate 1, which is the basic support component of the entire probe and provides a stable installation position for other components. A sliding rod 2 is fixedly connected to the fixing plate 1, serving as a sliding track for the internal components of the probe, allowing subsequent components to be flexibly adjusted in position. Multiple fixing blocks 3 are fixedly connected to the sliding rod 2, providing fixed support points for a connecting rod 4 and ensuring the installation stability of the connecting rod 4. The connecting rod 4 is rotatably connected to the fixing blocks 3, enabling different angle changes through rotation. The design allows the probe to fit better into pipes of different shapes and sizes, improving its adaptability. An adjustment assembly is installed on the outer wall of the slide rod 2. This assembly allows for precise adjustments to parts of the probe's structure based on different pipe conditions, thereby optimizing the detection effect. A mounting plate 9 is fixedly connected to the side of the slide rod 2 away from the fixing plate 1. The mounting plate 9 serves as the mounting carrier for the probe head 13, integrating multiple probe heads 13 together and ensuring a reasonable layout. Multiple probe heads 13 are mounted on the outer wall of the mounting plate 9. The probe head 13 is the core component of the probe, used to detect the leakage magnetic signal of the pipe. Multiple protective components are installed inside the mounting plate 9 to protect the probe head 13 from interference or damage during use, ensuring the normal operation and service life of the probe head 13.

[0029] Reference Figures 1-3The adjustment assembly includes a sliding sleeve 5, which is internally slidably connected to the outer wall of the slide rod 2. The sliding sleeve 5 can slide along the slide rod 2 to achieve adjustments at different positions. Multiple rotating brackets 7 are rotatably connected to the sliding sleeve 5. The rotation function of the rotating brackets 7 further increases the flexibility of the probe structure, allowing it to adjust its angle according to different pipe shapes and curvatures, ensuring good fit between the probe and the pipe and improving detection accuracy. A limiting block 6 is fixedly connected to the side of the sliding sleeve 5 away from the fixed plate 1. The function of the limiting block 6 is to limit the sliding range of the sliding sleeve 5 and prevent the sliding sleeve 5 from sliding excessively, which would lead to structural instability. A first spring 8 is fixedly connected to the side of the limiting block 6 away from the sliding sleeve 5. The first spring 8 can provide elastic force and play a role in buffering and resetting during the sliding process of the sliding sleeve 5.

[0030] Reference Figure 3 The protective assembly includes multiple blocking blocks 11, which are slidably connected to the inner wall of the mounting plate 9. The blocking blocks 11 can slide within the mounting plate 9. When the probe 13 is subjected to external pressure or collision, the blocking blocks 11 will slide accordingly, playing a preliminary blocking and buffering role to prevent the probe 13 from being directly damaged by excessive external force. A connecting rod 12 is fixedly connected to one side of the blocking block 11. The connecting rod 12 serves as a connecting component between the blocking block 11 and the probe 13, connecting the two to ensure the transmission of force and the continuity of action. A second spring 14 is fixedly connected to the other side of the blocking block 11. The second spring 14 can provide elastic support when the blocking block 11 slides, enhancing the buffering effect of the blocking block 11. At the same time, it can also store energy when the blocking block 11 is subjected to external force. When the external force disappears, the blocking block 11 returns to its original position. The side of the connecting rod 12 away from the blocking block 11 is fixedly connected to the inside of the probe 13 to ensure the coordinated work between the blocking block 11 and the probe 13, forming a complete protective system to provide all-round protection for the probe 13.

[0031] Reference Figure 1 A sensor 10 is provided on the side of the mounting plate 9 away from the slide bar 2. The sensor 10 can receive the leakage magnetic signal detected by the probe 13 and convert it into an electrical signal or other processable signal. The sensor 10 can realize the accurate acquisition and transmission of the leakage magnetic signal.

[0032] Reference Figure 2 The end of the connecting rod 4 away from the fixed block 3 is rotatably connected to the middle of the slide rod 2, so as to realize different angle adjustments at both ends of the connecting rod 4. This allows the connecting rod 4 to adjust its length and angle according to the connection point between the fixed block 3 at different positions on the slide rod 2 and the middle of the slide rod 2, thereby adjusting the shape and structure of the entire probe to better adapt to pipes of different shapes and sizes. Multiple moving wheels are fixedly connected to the side of the slide rod 2 away from the rotating frame 7. The moving wheels can make the probe move more conveniently in the pipe, reduce the friction between the probe and the pipe, and ensure the smooth sliding of the probe in the pipe.

[0033] Reference Figure 2 The end of the first spring 8 away from the limiting block 6 is fixedly connected to the mounting plate 9, ensuring the installation stability of the first spring 8. When the sliding sleeve 5 slides along the sliding rod 2, the first spring 8 can generate an elastic force between the mounting plate 9 and the limiting block 6. The position of the sliding sleeve 5 can be adjusted by this elastic force. When it is necessary to adjust the detection range or angle of the probe, the first spring 8 will extend and retract accordingly, ensuring the dynamic adjustment and reset of the probe structure. At the same time, it can also maintain the structural stability of the probe under different working environments.

[0034] Reference Figure 3 The outer wall of the probe 13 is slidably connected to the inside of the mounting plate 9. When encountering uneven surfaces or other interference factors in the pipeline, the probe 13 can slide appropriately within the mounting plate 9 to avoid damage due to rigid collisions. At the same time, the position of the probe 13 within the mounting plate 9 can be adjusted according to the detection requirements to improve the flexibility and adaptability of the detection.

[0035] Reference Figure 3 The end of the second spring 14 away from the blocking block 11 is fixedly connected to the inner wall of the mounting plate 9, ensuring the installation of the second spring 14 firmly. When the blocking block 11 is subjected to external force and slides, the second spring 14 generates an elastic force between the inner wall of the mounting plate 9 and the blocking block 11. This elastic force can make the blocking block 11 quickly return to its original position after the external force disappears, while providing a continuous buffering effect for the blocking block 11, ensuring the normal operation of the protective component and the effective protection of the probe head 13.

[0036] Working principle: First, the pipeline magnetic flux leakage detection probe is placed inside the pipeline to be tested. During the movement of the pipeline magnetic flux leakage detection probe, multiple moving wheels on one side of the slide rod 2 contact the inner wall of the pipeline. At this time, if the inner wall of the pipeline shrinks, the rotating frame 7 will be squeezed, further driving the fixed block 3 to rotate while causing the sliding sleeve 5 to slide. When the sliding sleeve 5 slides, it will drive the limiting block 6 to slide, and at the same time, it will compress the first spring 8, causing the first spring 8 to store potential energy. When the pipeline magnetic flux leakage detection probe expands during the movement, the first spring 8 will release the stored potential energy, pushing the limiting block 6 to slide, further driving the sliding sleeve 5 to slide, causing the rotating frame 7 to rotate, thereby causing the moving wheels to slide outward and make the moving wheels fit against the inner wall of the pipeline.

[0037] Similarly, when the inner wall of the pipe shrinks or impurities obstruct it, the probe 13 will be squeezed, which will cause the connecting rod 12 to slide, further causing the blocking block 11 to slide, and at the same time squeezing the second spring 14, causing the second spring 14 to store potential energy. When the inside of the pipe expands or impurities are no longer present, the second spring 14 will release the stored potential energy, causing the blocking block 11 to slide, which will further cause the connecting rod 12 to slide, causing the probe 13 to slide, so that the probe 13 fits against the inner wall of the pipe to achieve the detection effect.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pipeline magnetic flux leakage detection probe, comprising a fixing plate (1), characterized in that: A sliding rod (2) is fixedly connected to the fixed plate (1), and multiple fixing blocks (3) are fixedly connected to the sliding rod (2). A connecting rod (4) is rotatably connected to the fixing block (3). An adjustment component is provided on the outer wall of the sliding rod (2). A mounting plate (9) is fixedly connected to the side of the sliding rod (2) away from the fixed plate (1). Multiple probes (13) are provided on the outer wall of the mounting plate (9). Multiple protective components are provided inside the mounting plate (9). The adjustment assembly includes a sliding sleeve (5), which is slidably connected to the outer wall of the slide rod (2). Multiple rotating frames (7) are rotatably connected to the sliding sleeve (5). A limiting block (6) is fixedly connected to the side of the sliding sleeve (5) away from the fixed plate (1). A first spring (8) is fixedly connected to the side of the limiting block (6) away from the sliding sleeve (5).

2. The pipeline magnetic flux leakage detection probe according to claim 1, characterized in that: The protective assembly includes multiple blocking blocks (11), which are slidably connected to the inner wall of the mounting plate (9). A connecting rod (12) is fixedly connected to one side of the blocking block (11), and a second spring (14) is fixedly connected to the other side of the blocking block (11). The side of the connecting rod (12) away from the blocking block (11) is fixedly connected to the inside of the probe head (13).

3. The pipeline magnetic flux leakage detection probe according to claim 1, characterized in that: A sensor (10) is provided on the side of the mounting plate (9) away from the slide bar (2).

4. A pipeline magnetic flux leakage detection probe according to claim 1, characterized in that: The end of the connecting rod (4) away from the fixed block (3) is rotatably connected to the middle of the slide rod (2), and a plurality of movable wheels are fixedly connected to the side of the slide rod (2) away from the rotating frame (7).

5. A pipeline magnetic flux leakage detection probe according to claim 1, characterized in that: The end of the first spring (8) away from the limiting block (6) is fixedly connected to the mounting plate (9).

6. A pipeline magnetic flux leakage detection probe according to claim 1, characterized in that: The outer wall of the probe (13) is slidably connected to the inside of the mounting plate (9).

7. A pipeline magnetic flux leakage detection probe according to claim 2, characterized in that: The end of the second spring (14) away from the blocking block (11) is fixedly connected to the inner wall of the mounting plate (9).

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