A rotating probe device for a magnetic flux leakage inspection apparatus

Abstract

The utility model discloses a kind of rotating probe devices of magnetic flux leakage testing equipment, it is related to magnetic flux leakage testing equipment technical field.The device includes main component and operating assembly, main component contains bottom plate, operating box and rotary drum, operating box is fixed on the top of bottom plate, rotary drum is located in operating box inner chamber;Operating assembly contains rotating member and detection adjusting part, rotating member is located in the top of operating box, detection adjusting part is located in the both sides of one end of rotary drum.First electric telescopic link of detection adjusting part drives first arc plate to adhere to different size pipeline, cooperate with ball to reduce abrasion, second electric telescopic link drives second arc plate fixed pipeline to prevent displacement;Rotating member is driven rotary drum rotation by driving motor and transmission structure, realize 360 degrees omnibearing detection.The utility model solves the problem that the existing equipment cannot be adapted to different size pipeline, leading to inaccurate detection, with the advantages of flexible adjustment, accurate detection, high stability.

Description

Technical Field

[0001] This utility model relates to the technical field of magnetic flux leakage testing equipment, specifically a rotating probe device for magnetic flux leakage testing equipment, which is suitable for surface defect detection of workpieces such as metal pipes, especially for 360-degree all-round flaw detection scenarios of pipes of different sizes. Background Technology

[0002] Magnetic flux leakage (MFL) testing is based on the principle that magnetic field leakage occurs when ferromagnetic materials are magnetized and surface or near-surface defects cause magnetic field leakage. It identifies defects by detecting the leakage magnetic field and is widely used in pipeline workpiece inspection. It can accurately identify defects such as cracks and corrosion, providing key evidence for pipeline safety assessment.

[0003] Existing rotary probe devices for magnetic flux leakage testing have the following shortcomings: the pipes to be inspected vary in specifications and sizes, and the equipment cannot flexibly adjust the probe-workpiece fit according to the pipe size; when inspecting thicker pipes, inaccurate detection is easily caused by insufficient fit, affecting the reliability of the results, misleading subsequent maintenance decisions, and threatening the safe operation of the pipeline. Therefore, it is necessary to develop a rotary probe device that can adapt to pipes of different sizes and provide accurate detection. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide a rotating probe device for magnetic flux leakage testing equipment, which solves the problem that existing equipment cannot adapt to pipes of different sizes, resulting in inaccurate detection. It has the advantages of flexible adjustment, strong adaptability and accurate detection.

[0005] The technical solution adopted by this utility model to solve the above problems is: a rotating probe device for magnetic flux leakage flaw detection equipment, including a main body component and an operating component.

[0006] Main components: Serving as the basic supporting structure of the device, these include a base plate, an operating box, and a rotating drum. The operating box is fixed to the top of the base plate, providing installation space for the internal components; the rotating drum is located inside the operating box, used to support the pipeline workpiece and achieve rotational detection.

[0007] Operating components: These components enable rotational drive and detection adjustment functions, and include a rotating component and a detection adjustment component. The rotating component is located on the top of the operating box and drives the rotating drum to rotate; the detection adjustment component is located on both sides of one end of the rotating drum and adjusts the fit between the probe and the pipeline.

[0008] Furthermore, the rotating component includes a drive motor, a first transmission rod, a first transmission wheel, a transmission belt, a second transmission wheel, a second transmission rod, a limiting ring, and a fixing plate. The drive motor is fixed to the top of the operating box via the fixing plate, and its output shaft is connected to the first transmission rod, driving the first transmission wheel to rotate. The first transmission wheel drives the second transmission wheel via the transmission belt, which in turn drives the second transmission rod and the rotating drum to rotate. The limiting ring limits the second transmission rod to ensure stable rotation.

[0009] The detection and adjustment components include a first electric telescopic rod, a first arc-shaped plate, a detector, ball bearings, an auxiliary groove, and a reinforcing block. The first electric telescopic rod is fixed to the rotating drum by the reinforcing block, driving the first arc-shaped plate to move and conform to pipes of different sizes; the detector on the surface of the first arc-shaped plate is used to detect the leakage magnetic field, and the ball bearings on the inner side (located in the auxiliary groove) reduce friction and wear with the pipe.

[0010] The main components also include a second electric telescopic rod and a second arc-shaped plate. The second electric telescopic rod is fixed to the inner wall of the rotating drum and drives the fixing plate to clamp the pipe to prevent the pipe from shifting during rotation detection. The circular auxiliary block on the surface of the rotating drum cooperates with the circular groove on the inner wall of the operating box to improve the rotational stability of the rotating drum.

[0011] Implementation principle Magnetic flux leakage detection principle: The detector detects the magnetic flux leakage at the defect location of the magnetized pipeline workpiece, converts the magnetic signal into an electrical signal, and realizes defect identification.

[0012] Adjustment and adaptation principle: The distance between the first arc-shaped plates is adjusted by the extension and retraction of the first electric telescopic rod to adapt to pipes of different diameters and ensure that the detector is in close contact with the pipe; the second electric telescopic rod drives the fixed plate to clamp the pipe to avoid displacement affecting the detection accuracy.

[0013] Rotary drive principle: The drive motor drives the rotating drum to rotate through a multi-stage transmission structure (transmission rod, transmission wheel, transmission belt), so that the detector can perform a 360-degree all-round scan of the pipeline.

[0014] Compared with the prior art, the present invention has the following beneficial effects: This invention, through the setting of the detection adjustment component, when encountering pipe workpieces of different sizes that need to be inspected, firstly, the pipe workpiece is placed in the inner cavity of the rotating drum and comes into contact with and adheres to the fixed plate and the second arc-shaped plate. At this time, the first electric telescopic rod is activated, and the extension and retraction of the first electric telescopic rod drives the two arc-shaped plates to move. While the arc-shaped plates move, they adhere to the pipe workpiece. Subsequently, during the adherence, ball bearings make contact with the surface of the pipe workpiece. The ball bearings prevent the arc-shaped plates from directly contacting the surface of the pipe workpiece during subsequent rotation, thus avoiding wear on the arc-shaped plates. Then, the second electric telescopic rod is activated again, and the extension and retraction of the second electric telescopic rod drives the fixed plate to move. While the fixed plate moves, it adheres to the pipe workpiece, avoiding displacement of the pipe workpiece during rotational inspection. After the adjustment and adhesion are completed, the surface of the pipe workpiece can be inspected using the detector. Attached Figure Description

[0015] Figure 1: Overall structural diagram of the device, showing the assembly relationship between the main components and the operating components.

[0016] Figure 2: Another view of the device structure, highlighting the connection details between the rotating drum and the control box.

[0017] Figure 3: Structural diagram of the rotating component, showing the composition of the drive motor and transmission structure.

[0018] Figure 4: Schematic diagram of the detection adjustment component, showing the positional relationship between the arc plate, detector and ball bearings.

[0019] The following components are labeled in the diagram: 10. Main body assembly; 11. Base plate; 12. Control box; 13. Rotary drum; 14. Circular auxiliary block; 15. Circular groove; 16. Second electric telescopic rod; 17. Second arc-shaped plate; 20. Operating assembly; 21. Rotating component; 211. Drive motor; 212. First transmission rod; 213. First transmission wheel; 214. Transmission belt; 215. Second transmission wheel; 216. Second transmission rod; 217. Limiting ring; 218. Fixing plate; 22. Detection and adjustment component; 221. First electric telescopic rod; 222. First arc-shaped plate; 223. Detector; 224. Ball bearing; 225. Auxiliary groove; 226. Reinforcing block. Detailed Implementation

[0020] The technical solution of this utility model will be described in more detail below with reference to preferred embodiments. However, these embodiments are merely descriptions of preferred implementations of this utility model and should not be construed as limiting the scope of this utility model in any way. Example

[0021] Reference Figures 1-4 This is the first embodiment of the present invention, which provides a rotating probe device for a magnetic flux leakage (MFL) flaw detector. The rotating probe device includes a main body assembly 10 and an operating assembly 20. Through the setting of the detection adjustment component 22, when encountering pipe workpieces of different sizes that need to be inspected, the pipe workpiece is first placed in the inner cavity of the rotating drum 13 and brought into contact with the second arc-shaped plate 17 and the first arc-shaped plate 222. At this time, the first electric telescopic rod 221 is activated. The extension and retraction of the first electric telescopic rod 221 drives the two first arc-shaped plates 222 to move, bringing the pipe workpiece into contact with the first arc-shaped plate 222 as the first arc-shaped plates 222 move. Simultaneously, the ball bearing 224 contacts and adheres to the surface of the pipe workpiece during the bonding process. The ball bearing 224 prevents the first arc plate 222 from directly contacting the surface of the pipe workpiece during subsequent rotation, thus avoiding wear on the first arc plate 222. Then, the second electric telescopic rod 16 is activated again, and the extension and retraction of the second electric telescopic rod 16 drives the second arc plate 17 to move. While the second arc plate 17 moves, the pipe workpiece is bonded, preventing displacement of the pipe workpiece during rotation detection. After the bonding is adjusted, the surface of the pipe workpiece can be inspected using the detector 223.

[0022] The main component 10 includes a base plate 11, an operation box 12, and a rotating cylinder 13. The operation box 12 is fixed to the top of the base plate 11, and the rotating cylinder 13 is disposed in the inner cavity of the operation box 12.

[0023] The operation box 12 allows for easy installation and positioning of components on its surface, improving the overall usability of the operation box 12. The rotating drum 13 facilitates the installation of surface components, making it easier to inspect pipe workpieces.

[0024] The operating component 20 includes a rotating component 21 and a detection and adjustment component 22. The rotating component 21 is located on the top of the operating box 12, and the detection and adjustment component 22 is located on both sides of one end of the rotating drum 13.

[0025] The rotating component 21 allows for easy driving of the rotating drum 13 to rotate, thereby rotating and inspecting the pipe workpiece to be tested. The adjusting component 22 allows for easy adjustment and fitting of pipe workpieces of different sizes, thus improving the testing effect for different pipe workpieces. Example

[0026] Reference Figures 2-4 This is the second embodiment of the present invention, which is based on the previous embodiment.

[0027] Specifically, the rotating component 21 includes a drive motor 211, a first transmission rod 212, and a first transmission wheel 213. The bottom of the drive motor 211 is fixed to the top of the operating box 12, one side of the first transmission rod 212 is fixed to the output shaft of the drive motor 211, and one side of the first transmission rod 212 is fixed to the inner cavity of the first transmission wheel 213.

[0028] When a circumferential rotation inspection of a pipe workpiece is required, the drive motor 211 is first started. The output shaft of the drive motor 211 drives the first transmission rod 212 to rotate. At the same time as the first transmission rod 212 rotates, the first transmission wheel 213 rotates. At the same time as the first transmission wheel 213 rotates, the transmission belt 214 engages and rotates. At the same time as the transmission belt 214 rotates, the second transmission wheel 215 engages and rotates. At the same time as the second transmission wheel 215 rotates, the second transmission rod 216 rotates. At the same time as the second transmission rod 216 rotates, the rotating drum 13 rotates. At the same time as the rotating drum 13 rotates, the circular auxiliary block 14 moves stabilizingly within the circular groove 15. Subsequently, the rotation of the rotating drum 13 rotates the detection adjustment component 22 on one side. The rotation of the detection adjustment component 22 is used to perform a circumferential rotation inspection of the pipe workpiece on the surface, thus effectively achieving the effect of circumferential rotation inspection of the pipe workpiece.

[0029] Specifically, the rotating component 21 also includes a transmission belt 214, a second transmission wheel 215, and a second transmission rod 216. The surface of the first transmission wheel 213 engages with the inner cavity of the transmission belt 214, the bottom of the inner cavity of the transmission belt 214 engages with the surface of the second transmission wheel 215, the inner cavity of the second transmission wheel 215 is fixed to the surface of the second transmission rod 216, and one side of the second transmission rod 216 extends into the inner cavity of the operating box 12 and is fixed to one side of the rotating drum 13.

[0030] By using the transmission belt 214, the second transmission wheel 215, and the second transmission rod 216 in combination, the rotating drum 13 can be easily driven to rotate. The rotation of the rotating drum 13 is used to inspect the pipe workpiece on the surface, thereby improving the overall practicality of the rotating drum 13.

[0031] Specifically, the rotating component 21 also includes a limiting ring 217, one side of the second transmission rod 216 is inserted into the inner cavity of the limiting ring 217, and one side of the limiting ring 217 is fixed to the inner cavity of the operating box 12.

[0032] By setting the limiting ring 217, it is convenient to limit and stabilize the rotation of the second transmission rod 216 while it is rotating, thereby improving the stability of the rotation of the second transmission rod 216 and ensuring a stable effect of driving the rotating drum 13 to rotate.

[0033] Specifically, the rotating component 21 also includes a fixing plate 218, one side of the drive motor 211 is fixed to one side of the fixing plate 218, and the bottom of the fixing plate 218 is fixed to one side of the top of the control box 12.

[0034] By setting the fixing plate 218, the drive motor 211 can be easily fixed in position when it is working, thereby improving the stability of the drive motor 211 and preventing displacement of the drive motor 211 during operation.

[0035] Specifically, the main component 10 also includes a circular auxiliary block 14 and a circular groove 15. The surface of the rotating cylinder 13 is fixed to the inner wall of the circular auxiliary block 14, and the surface of the circular auxiliary block 14 is attached to the inner cavity of the circular groove 15. The circular groove 15 is opened on the inner wall of the operation box 12.

[0036] By using the circular auxiliary block 14 and the circular groove 15 together, the rotation of the rotating drum 13 can be stabilized while it is rotating, thus preventing subsequent shaking.

[0037] Specifically, the detection adjustment component 22 includes a first electric telescopic rod 221, a first arc plate 222, and a detector 223. The two first electric telescopic rods 221 are fixed to opposite ends of one side of the rotating drum 13. The first arc plate 222 is fixed to the bottom of the first electric telescopic rod 221, and the detector 223 is fixed to the surface of the first arc plate 222.

[0038] When encountering pipe workpieces of different sizes that need to be inspected, the pipe workpiece is first placed in the inner cavity of the rotating drum 13 and brought into contact with the second arc plate 17 and the first arc plate 222. At this time, the first electric telescopic rod 221 is activated, and the extension and retraction of the first electric telescopic rod 221 drives the two first arc plates 222 to move. While the first arc plates 222 are moving, the pipe workpiece is brought into contact with them. At the same time, the ball bearings 224 are used to make contact with the surface of the pipe workpiece. The ball bearings 224 are used to prevent the arc plates 222 from directly contacting the surface of the pipe workpiece during subsequent rotation, thus avoiding wear on the arc plates 222. Then, the second electric telescopic rod 16 is activated again, and the extension and retraction of the second electric telescopic rod 16 drives the second arc plate 17 to move. While the second arc plate 17 is moving, the pipe workpiece is brought into contact with them, avoiding displacement of the pipe workpiece during rotational inspection. After the contact is adjusted, the surface of the pipe workpiece can be inspected using the detector 223. Example

[0039] Reference Figure 4 This is the third embodiment of the present invention, which is based on the first two embodiments.

[0040] Specifically, the detection adjustment component 22 also includes a ball bearing 224 and an auxiliary groove 225. The ball bearing 224 rotates in the inner cavity of the auxiliary groove 225, which is located in the inner cavity of the first arc-shaped plate 222.

[0041] By using the ball bearing 224 and the auxiliary groove 225 together, the ball bearing 224 can make rotational contact with the pipe workpiece while contacting it, thus avoiding direct contact between the first arc plate 222 and the surface of the pipe workpiece, which would cause wear on the first arc plate 222.

[0042] Specifically, the detection adjustment component 22 also includes a reinforcing block 226. One side of the top of the first electric telescopic rod 221 is fixed to the bottom of the reinforcing block 226, and one side of the reinforcing block 226 is fixed to one side of the rotating drum 13.

[0043] By setting the reinforcing block 226, the stability of the first electric telescopic rod 221 can be improved during operation, ensuring the first electric telescopic rod 221 is firmly positioned.

[0044] Specifically, the main component 10 also includes a second electric telescopic rod 16 and a second arc plate 17. The opposite sides of the two second electric telescopic rods 16 are fixed to the inner wall of the rotating drum 13, and the bottom of the second arc plate 17 is fixed to one side of the second electric telescopic rod 16. The inner wall of the second arc plate 17 is in contact with the pipe workpiece.

[0045] By using the second electric telescopic rod 16 and the second arc plate 17 together, the pipe workpiece can be easily attached and fixed, improving the stability when inspecting the pipe workpiece and avoiding displacement of the pipe workpiece when the rotating drum 13 rotates.

[0046] In use, the pipe workpiece is placed inside the rotating drum 13 and brought into contact with the second arc-shaped plate 17 and the first arc-shaped plate 222. Then, the first electric telescopic rod 221 is activated. The telescopic movement of the first electric telescopic rod 221 moves the two first arc-shaped plates 222, bringing the pipe workpiece into contact with the rotating drum 13. Simultaneously, the ball bearings 224 make contact with the surface of the pipe workpiece. The ball bearings 224 prevent direct contact between the first arc-shaped plate 222 and the surface of the pipe workpiece during subsequent rotation, thus avoiding damage to the first arc-shaped plate 222. Wear on the shaped plate 222 leads to the reactivation of the second electric telescopic rod 16. The telescopic movement of the second electric telescopic rod 16 moves the second arc-shaped plate 17, simultaneously fitting the pipe workpiece to the surface. This prevents displacement of the pipe workpiece during rotational testing. After adjustment and fitting, the detector 223 is activated to perform magnetic flux leakage testing on the surface of the pipe workpiece. It should be noted that the detector 223 is electrically connected to the control terminal. In this solution, the control terminal can be a conventional control module, such as a PLC. The detector 223 is responsible for detecting the magnetic leakage of the pipe workpiece surface, converting the magnetic leakage signal into an electrical signal output. The controller receives this signal and transmits the detection data according to preset logic. Those skilled in the art will understand this clearly, so it will not be elaborated here. During the detection process, the drive motor 211 can be started, and the output shaft of the drive motor 211 drives the first transmission rod 212 to rotate. Simultaneously, the first transmission rod 212 rotates, driving the first transmission wheel 213 to rotate. Simultaneously, the first transmission wheel 213 rotates, engaging the transmission belt 214 to rotate. While rotating, the second transmission wheel 215 is engaged and rotates. As the second transmission wheel 215 rotates, it drives the second transmission rod 216 to rotate. As the second transmission rod 216 rotates, it drives the rotating drum 13 to rotate. As the rotating drum 13 rotates, it drives the circular auxiliary block 14 to move stably within the circular groove 15. Subsequently, the rotation of the rotating drum 13 rotates the detection adjustment component 22 on one side. The rotation of the detection adjustment component 22 allows for the surrounding rotation detection of the pipe workpiece, thus effectively achieving the effect of surrounding rotation detection of the pipe workpiece.

[0047] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this invention should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A rotating probe device for a magnetic flux leakage flaw detection equipment, characterized in that, include: The main body assembly (10) includes a base plate (11), an operation box (12) and a rotating cylinder (13). The operation box (12) is fixed to the top of the base plate (11), and the rotating cylinder (13) is disposed in the inner cavity of the operation box (12). The operation assembly (20) includes a rotating component (21) and a detection adjustment component (22). The rotating component (21) is disposed on the top of the operation box (12), and the detection adjustment component (22) is disposed on both sides of one end of the rotating cylinder (13).

2. The rotating probe device of the magnetic flux leakage flaw detection equipment according to claim 1, characterized in that, The rotating component (21) includes a drive motor (211), a first transmission rod (212), and a first transmission wheel (213). The bottom of the drive motor (211) is fixed to the top of the operating box (12). One side of the first transmission rod (212) is fixed to the output shaft of the drive motor (211), and the other side of the first transmission rod (212) is fixed to the inner cavity of the first transmission wheel (213).

3. The rotating probe device of the magnetic flux leakage flaw detector according to claim 2, characterized in that, The rotating component (21) further includes a transmission belt (214), a second transmission wheel (215), and a second transmission rod (216). The surface of the first transmission wheel (213) engages with the inner cavity of the transmission belt (214), the bottom of the inner cavity of the transmission belt (214) engages with the surface of the second transmission wheel (215), the inner cavity of the second transmission wheel (215) is fixed to the surface of the second transmission rod (216), and one side of the second transmission rod (216) extends through the inner cavity of the operating box (12) and is fixed to one side of the rotating drum (13).

4. The rotating probe device of the magnetic flux leakage flaw detector according to claim 1, characterized in that, The detection adjustment component (22) includes a first electric telescopic rod (221), a first arc plate (222), and a detector (223). The two first electric telescopic rods (221) are fixed to opposite ends of one side of the rotating drum (13). The first arc plate (222) is fixed to the bottom of the first electric telescopic rod (221), and the detector (223) is fixed to the surface of the first arc plate (222).

5. The rotating probe device of the magnetic flux leakage flaw detector according to claim 4, characterized in that, The detection adjustment component (22) also includes a ball bearing (224) and an auxiliary groove (225). The ball bearing (224) rotates in the inner cavity of the auxiliary groove (225), which is located in the inner cavity of the first arc-shaped plate (222). The detection adjustment component (22) also includes a reinforcing block (226). One side of the top of the first electric telescopic rod (221) is fixed to the bottom of the reinforcing block (226), and one side of the reinforcing block (226) is fixed to one side of the rotating drum (13).

6. The rotating probe device of the magnetic flux leakage flaw detector according to claim 1, characterized in that, The main component (10) also includes a second electric telescopic rod (16), a second arc plate (17), a circular auxiliary block (14), and a circular groove (15); the two second electric telescopic rods (16) are fixed to the inner wall of the rotating drum (13) on opposite sides, the bottom of the second arc plate (17) is fixed to one side of the second electric telescopic rod (16), and the inner wall of the second arc plate (17) is in contact with the pipe workpiece; the surface of the rotating drum (13) is fixed to the inner wall of the circular auxiliary block (14), the surface of the circular auxiliary block (14) is in contact with the inner cavity of the circular groove (15), and the circular groove (15) is opened on the inner wall of the operating box (12).

7. The rotating probe device of the magnetic flux leakage flaw detector according to claim 3, characterized in that, The rotating component (21) also includes a limiting ring (217) and a fixing plate (218). One side of the second transmission rod (216) is inserted into the inner cavity of the limiting ring (217), and one side of the limiting ring (217) is fixed to the inner cavity of the operating box (12). One side of the drive motor (211) is fixed to one side of the fixing plate (218), and the bottom of the fixing plate (218) is fixed to one side of the top of the operating box (12).

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