Device for monitoring diameter mutation of magnetic metal tubular object

Abstract

The utility model relates to the technical field of monitoring, in particular to a device for monitoring diameter mutation of a magnetic metal tubular object, which comprises a machine body, a bearing support and a loading base are respectively and fixedly arranged at the upper end and the lower end of the machine body, and a magnetic field generator body used for being externally connected with a power supply is fixedly arranged on the bearing support. A driving motor is fixedly mounted on the loading base, and the machine body is provided with a feeding mechanism which is driven by the driving motor and is used for conveying to-be-tested pipe fittings to the magnetic field generator body. According to the utility model, the machine body is provided with the movable support which is movably dragged by the traction roller, so that the movable support supports the pipe fitting to be tested to perform preliminary horizontal movement, then the movable support is provided with the movable truss which is movably dragged by the first cylinder, and the bearing sleeve is internally provided with the wedge head driving piece and the wedge head driven rod which movably abut against each other; the limiting clamping plate moving in the radial direction is used for loosening and tightening the to-be-detected pipe fitting, so that the to-be-detected pipe fitting is conveniently and stably conveyed.

Description

Technical Field

[0001] The utility model relates to the technical field of monitoring, in particular to a device for monitoring sudden changes in the diameter of a magnetic metal tubular object. Background Art

[0002] This device is used on automated production lines for long metal items to automatically detect sudden changes in the item's outer diameter. It can also be used in oil and gas fields, inspecting the couplings of metal oil and gas pipes during automated installation. The item being inspected passes through a magnetic field generator, whose material varies depending on the application. For example, if load-bearing is required, non-magnetic steel must be used, while plastic can be used if load-bearing is not. The winding coil must be made of a non-magnetic material. The winding is determined based on factors such as the change in magnetic field intensity after a sudden change in the item's outer diameter. The specific diameter and length of the enameled wire can vary. Currently, various pipe fittings have diverse structures. To ensure their smoothness, structural monitoring is often performed. This device detects sudden changes in the shape of metal pipes, enabling automation. This improves automation, increases production efficiency, and reduces costs.

[0003] When the outer diameter of an object remains constant, the magnetic field remains stable within a certain range. When the outer diameter increases, the magnetic field decreases. If the decrease exceeds a certain set value, this indicates a change in the object's outer diameter. When the outer diameter decreases, the magnetic field increases. If the increase exceeds a set value, this indicates a decrease. Whether this decreases or increases, it indicates a change in the outer diameter. This principle allows for monitoring the outer diameter of pipes, but currently, it's difficult to position and fix the pipes under test, making it difficult to adjust their status. It's especially difficult to get the pipes to pass through the magnetic field, preventing them from contacting the magnetic field generator and enabling comprehensive monitoring. Utility Model Content

[0004] The utility model aims to solve the problem in the prior art that it is difficult to monitor the sudden change in the diameter of a magnetic metal tubular object, and proposes a device for monitoring the sudden change in the diameter of a magnetic metal tubular object.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A device for monitoring sudden changes in the diameter of a magnetic metal tubular object comprises a body, with a load-bearing bracket and a load-bearing base fixedly mounted on the upper and lower ends of the body respectively; a magnetic field generator body for an external power supply is fixedly mounted on the load-bearing bracket; a drive motor is fixedly mounted on the load-bearing base; and the body is provided with a feeding mechanism driven by the drive motor and used to deliver the pipe to be tested to the magnetic field generator body.

[0007] Preferably, the magnetic field generator body comprises a tube column with two ends communicating with each other, and a spirally distributed conductive coil is fixedly mounted on the tube column.

[0008] Preferably, the feeding mechanism includes a traction roller rotatably mounted on a load-bearing base and fixedly connected to an output end of a driving motor, a steering pulley and a guide block are fixedly mounted on the lower end of the machine body, a long guide hole is provided in the machine body, and a movable bracket movably pulled by the traction roller is slidably mounted in the long guide hole, and a first cylinder and a movable truss fixedly pulled by the first cylinder are provided on the movable bracket;

[0009] The movable truss is fixedly provided with a second cylinder, and the movable truss is provided with a locking fixture for fixing the pipe to be tested via the second cylinder.

[0010] Preferably, a traction rope passing through a steering pulley is fixedly connected between the traction roller and the movable bracket, and a return spring is welded between the guide block and the movable bracket.

[0011] Preferably, the first cylinder is fixedly mounted on the movable bracket, and the movable truss is slidably mounted on the movable bracket.

[0012] Preferably, the locking tooling includes a second cylinder and a load-bearing sleeve fixedly mounted on the movable truss, a wedge head driving member slidingly sleeved in the load-bearing sleeve and fixedly connected to the output end of the second cylinder, a strong spring welded in the load-bearing sleeve, a limiting splint corresponding to the inner wall of the pipe to be tested is welded on the strong spring, and a wedge head follower rod slidingly sleeved in the load-bearing sleeve and movably resisting is fixedly connected to the limiting splint.

[0013] Preferably, the limiting clamp is an arc plate structure.

[0014] Compared with the prior art, the present invention has the following advantages:

[0015] 1. The utility model sets a magnetic field generator body composed of a pipe column and a conductive coil on the machine body, and transmits the pipe to be tested through the magnetic field generator body to comprehensively monitor the pipe to be tested.

[0016] 2. The utility model is provided with a movable bracket on the machine body, which is movably pulled by a traction roller, so that the movable bracket supports the pipe to be tested to perform initial horizontal movement, and then a movable truss movably pulled by a first cylinder is provided on the movable bracket to ensure that the pipe to be tested can completely pass through the magnetic field generator body.

[0017] 3. The utility model sets a second cylinder and a load-bearing sleeve on the mobile truss, sets a wedge head driving member and a wedge head driven rod that are movable and offset against each other in the load-bearing sleeve, and uses a radially movable limit clamp to loosen or tighten the pipe to be tested, thereby facilitating the smooth transportation of the pipe to be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of a device for monitoring sudden changes in the diameter of a magnetic metal tubular object proposed by the present invention;

[0019] Figure 2 This is a bottom view of a device for monitoring sudden changes in the diameter of a magnetic metal tubular object proposed by the present invention;

[0020] Figure 3 This is a cross-sectional view of a device for monitoring sudden changes in the diameter of a magnetic metal tubular object proposed by the present invention;

[0021] Figure 4 This is an enlarged schematic diagram of the structure of part A of a device for monitoring sudden changes in the diameter of a magnetic metal tubular object proposed by the present invention.

[0022] In the figure: 1. Machine body; 2. Load-bearing bracket; 3. Load-bearing base; 4. Magnetic field generator body; 401. Pipe column; 402. Conductive coil; 5. Driving motor; 6. Traction roller; 7. Steering pulley; 8. Guide block; 9. Guide long hole; 10. Moving bracket; 11. Traction rope; 12. Return spring; 13. First cylinder; 14. Moving truss; 15. Second cylinder; 16. Load-bearing sleeve; 17. Wedge head driving part; 18. Power spring; 19. Limiting splint; 20. Wedge head follower rod. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0024] Reference Figure 1-Figure 4 A device for monitoring sudden changes in the diameter of a magnetic metal tubular object comprises a body 1, a load-bearing bracket 2 and a load-bearing base 3 are fixedly mounted on the upper and lower ends of the body 1, a magnetic field generator body 4 for an external power supply is fixedly mounted on the load-bearing bracket 2, and a magnetic field generator body 4 for an external power supply is fixedly mounted on the load-bearing bracket 2. Figure 2 It should be noted that the magnetic field generator body 4 includes a tube column 401 with two interconnected ends. A spirally distributed conductive coil 402 is fixedly mounted on the tube column 401. The power is connected through the conductive coil 402, and the tube column 401 makes corresponding changes according to the object to be detected. At the same time, the magnetic field generator body 4 is also provided with six magnetic field sensors to facilitate induction monitoring of the magnetic field.

[0025] The load base 3 is fixedly mounted with a drive motor 5, and the body 1 is provided with a feeding mechanism driven by the drive motor 5 and used to feed the pipe to be tested to the magnetic field generator body 4. Figure 2 -Attached Figure 4 :

[0026] On the one hand, the feeding mechanism includes a traction roller 6 rotatably mounted on the load-bearing base 3 and fixedly connected to the output end of the drive motor 5. A steering pulley 7 and a guide block 8 are fixedly mounted on the lower end of the machine body 1. A long guide hole 9 is opened in the machine body 1, and a mobile bracket 10 movably pulled by the traction roller 6 is slidably mounted in the long guide hole 9. It should be noted that by driving the traction roller 6 to rotate, the mobile bracket 10 is pulled, so that the pipe to be tested is initially moved. A first cylinder 13 and a mobile truss 14 fixedly pulled by the first cylinder 13 are provided on the mobile bracket 10. By controlling the horizontal movement of the mobile truss 14 on the mobile bracket 10, it is ensured that the pipe to be tested can completely pass through the magnetic field generator body 4;

[0027] On the other hand, a second cylinder 15 is fixedly provided on the mobile truss 14, and the mobile truss 14 is provided with a locking fixture for fixing the pipe to be tested through the second cylinder 15. The locking fixture includes a second cylinder 15 and a load-bearing sleeve 16 fixedly installed on the mobile truss 14. The load-bearing sleeve 16 is slidingly sleeved with a wedge head driving member 17 fixedly connected to the output end of the second cylinder 15. A strong spring 18 is welded in the load-bearing sleeve 16, and a limiting splint 19 corresponding to the inner wall of the pipe to be tested is welded on the strong spring 18. The limiting splint 19 is fixedly connected to a wedge head follower rod 20 that is slidably sleeved in the load-bearing sleeve 16 and movably resists. It should be noted that the strong spring 18, the limiting splint 19 and the wedge head follower rod 20 are fixedly connected to the limit splint 19. It should be noted that the strong spring 18, the limiting splint 19 and the wedge head follower rod 20 are a group of supporting structures, and the number of support structures is at least two groups and is equidistantly distributed circumferentially to facilitate expansion in the pipe to be tested.

[0028] A traction rope 11 is fixedly connected between the traction roller 6 and the movable bracket 10 through the steering pulley 7, and a reset spring 12 is welded between the guide block 8 and the movable bracket 10. The reset spring 12 can automatically reset the movable bracket 10, and the movable bracket 10 is pulled by the traction rope 11.

[0029] The first cylinder 13 is fixedly mounted on the movable bracket 10 , and the movable truss 14 is slidably mounted on the movable bracket 10 . The first cylinder 13 drives the movable truss 14 to further move, thereby driving the pipe to be tested to further move.

[0030] The limiting clamping plate 19 is an arc plate structure, so as to be in close contact with the pipe to be tested and ensure the firmness of the support and fixation.

[0031] It should be noted that the specific models and specifications of the magnetic field generator body 4, the drive motor 5, the first cylinder 13 and the second cylinder 15 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it is not repeated here.

[0032] The functional principle of this utility model can be explained through the following operation modes:

[0033] The power supply is connected through the conductive coil 402 so that the magnetic field generator body 4 generates a magnetic field;

[0034] The pipe to be tested is initially placed on the load-bearing sleeve 16, and the second cylinder 15 is controlled to be turned on. The output end of the second cylinder 15 drives the wedge head driving member 17 to move in the load-bearing sleeve 16, thereby squeezing the wedge head driving member 17 and simultaneously squeezing the strong spring 18, so that the limit clamping plate 19 extending out of the load-bearing sleeve 16 contacts the inner wall of the pipe to be tested, thereby supporting and fixing the pipe to be tested;

[0035] The driving motor 5 is controlled to be turned on, and the driving motor 5 drives the traction roller 6 to rotate to pull the traction rope 11, so that the movable bracket 10 moves horizontally along the guide slot 9. The movable bracket 10 moves through the movable truss 14, so that the pipe to be tested moves into the magnetic field generator body 4;

[0036] On the movable support 10 , the first cylinder 13 is controlled to open, so that the movable truss 14 drives the pipe to be tested to move further, so that the pipe to be tested further passes through the magnetic field generator body 4 ;

[0037] The magnetic field generator body 4 is used to comprehensively monitor the pipe to be tested.

[0038] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A device for monitoring sudden changes in the diameter of a magnetic metal tubular object, comprising a body (1), characterized in that: A load-bearing bracket (2) and a load-bearing base (3) are fixedly mounted on the upper and lower ends of the machine body (1), a magnetic field generator body (4) for an external power supply is fixedly mounted on the load-bearing bracket (2), a driving motor (5) is fixedly mounted on the load-bearing base (3), and the machine body (1) is provided with a feeding mechanism driven by the driving motor (5) and used for conveying the pipe to be tested to the magnetic field generator body (4).

2. The device for monitoring sudden changes in diameter of a magnetic metal tubular object according to claim 1, characterized in that: The magnetic field generator body (4) comprises a tube column (401) with two interconnected ends, and a spirally distributed conductive coil (402) is fixedly mounted on the tube column (401).

3. The device for monitoring sudden changes in diameter of a magnetic metal tubular object according to claim 1, characterized in that: The feeding mechanism comprises a traction roller (6) rotatably mounted on a load-bearing base (3) and fixedly connected to the output end of a driving motor (5); a steering pulley (7) and a guide block (8) are fixedly mounted on the lower end of the machine body (1); a guide slot (9) is provided in the machine body (1), and a movable bracket (10) movably pulled by the traction roller (6) is slidably mounted in the guide slot (9); a first cylinder (13) and a movable truss (14) fixedly pulled by the first cylinder (13) are provided on the movable bracket (10); A second cylinder (15) is fixedly provided on the movable truss (14), and the movable truss (14) is provided with a locking tool for fixing the pipe to be tested via the second cylinder (15).

4. The device for monitoring sudden changes in diameter of a magnetic metal tubular object according to claim 3, characterized in that: A traction rope (11) passing through a steering pulley (7) is fixedly connected between the traction roller (6) and the movable bracket (10), and a return spring (12) is welded between the guide block (8) and the movable bracket (10).

5. The device for monitoring sudden changes in diameter of a magnetic metal tubular object according to claim 3, characterized in that: The first cylinder (13) is fixedly mounted on the movable bracket (10), and the movable truss (14) is slidably mounted on the movable bracket (10).

6. The device for monitoring sudden changes in diameter of a magnetic metal tubular object according to claim 3, characterized in that: The locking fixture comprises a second cylinder (15) and a load-bearing sleeve (16) fixedly mounted on a movable truss (14); a wedge head driving member (17) fixedly connected to the output end of the second cylinder (15) is slidably mounted in the load-bearing sleeve (16); a strong spring (18) is welded in the load-bearing sleeve (16); a limiting clamp (19) corresponding to the inner wall of the pipe to be tested is welded on the strong spring (18); and a wedge head driven rod (20) is fixedly connected to the limiting clamp (19) and is slidably mounted in the load-bearing sleeve (16) and movably contacts the wedge head.

7. The device for monitoring sudden changes in diameter of a magnetic metal tubular object according to claim 6, characterized in that: The limiting clamping plate (19) is an arc plate structure.

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