Detection device suitable for magnetic flux leakage of oil and gas pipeline

Abstract

The utility model discloses a detection device suitable for oil gas pipeline magnetic flux leakage, which comprises a probe magnet section, three groups of universal joints, a battery section and a pulley, the universal joints are arranged on two sides of the probe magnet section, the battery section is arranged on the right side of the universal joints, another group of universal joints is arranged on the right side of the battery section, and the pulley is arranged on the other group of universal joints. Three groups of pulleys are arranged on the right side of the universal joint, and a cleaning assembly is arranged at the left end of the universal joint on the left side of the probe magnet section. A cleaning assembly is arranged at one end of a universal joint on the left side of a probe magnet joint, so that an extrusion plate in the cleaning assembly rotates on a threaded rod in a threaded mode and extrudes a rotating rod, the rotating rod rotates in a fixing block and drives a scraper to be attached to the inner wall of a pipeline, and then a transmission rod is driven by a motor to rotate; and the scraper blade is used for cleaning attachments on the inner wall of the pipeline, so that interference on the probe magnet section during use is reduced, and the accuracy of a detection result of the probe magnet section is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic flux leakage detection of pipelines, in particular to a detection device suitable for magnetic flux leakage of oil and gas pipelines. Background Technique

[0002] The magnetic flux leakage detection device for oil and gas pipelines is a high-precision device that utilizes magnetic principles and combines advanced electronic technology, big data technology, and transmission and storage technology. This device is mainly used to detect internal damages and defects in oil and gas pipelines, including metal loss, mechanical damage, cracks, etc. The core parts of the device mainly include a magnet, a sensor, and a data processing unit. The magnet is responsible for applying an excitation magnetic field to magnetize the ferromagnetic pipeline. When there are defects in the pipeline, the leakage magnetic field at the defect will change, and the sensor is responsible for detecting these changes. The sensor usually includes coils and Hall elements for capturing and recording these signals. The data processing unit processes and analyzes the data captured by the sensor to identify information such as the location, type, and size of the defects. An existing detection device suitable for magnetic flux leakage of oil and gas pipelines can basically meet the daily use requirements, but there are still some deficiencies that need to be improved.

[0003] The movement of the magnetic flux leakage detector mainly depends on the pressure difference before and after the leather cup sealed on the pipe wall by the fluid. This pressure difference pushes the detector to run inside the pipeline. Usually, there are some attachments such as sediment and oil scale on the inner wall of the pipeline. The existence of the attachments may make the inner wall of the pipeline not smooth, increasing the roughness of the pipe wall, resulting in more interference during the detection process of the magnetic flux leakage detector, and thus affecting the accuracy of the detection results. For this reason, we propose a detection device suitable for magnetic flux leakage of oil and gas pipelines to solve the above problems. Content of the Utility Model

[0004] The purpose of the utility model is to provide a detection device suitable for magnetic flux leakage of oil and gas pipelines to solve the problems raised in the above background technique.

[0005] To achieve the above object, the present utility model provides the following technical solutions: A detection device applicable to magnetic flux leakage of oil and gas pipelines, comprising a probe magnet section, a universal joint, a battery section, and pulleys. There are three groups of universal joints. Universal joints are provided on both sides of the probe magnet section. A battery section is provided on the right side of the universal joint. Another group of universal joints is provided on the right side of the battery section. Three groups of pulleys are provided on the right side of the universal joint. A cleaning component is provided on the left end of the universal joint on the left side of the probe magnet section. A connecting component is provided between the universal joint and the pulley. The cleaning component includes a fixed seat provided on the universal joint on the left side of the probe magnet section. A motor is built in the fixed seat. A leather cup is provided on the left side of the fixed seat. A transmission rod is provided on the output end of the motor. Multiple groups of fixed blocks are provided on the transmission rod. Rotating rods are rotatably arranged in the fixed blocks. Torsion springs are wound around the surfaces of both ends of the rotating rods. Scrapers are provided on the outer surfaces of the outer ends of the rotating rods. A threaded rod is provided at the left end of the transmission rod. An extrusion plate is threadedly connected to the threaded rod.

[0006] As a further preference of this technical solution, the connecting component includes a sleeve provided on the right end of the universal joint. A pulley is slidably connected in the sleeve. Sliding grooves are provided on the surfaces of the pulleys. Springs are provided on the inner walls of the sliding grooves. The other ends of the springs are fixedly connected to positioning rods. Limiting grooves are provided on the inner walls of the sleeves corresponding to the outer surfaces of the positioning rods.

[0007] As a further preference of this technical solution, the front and rear end surfaces of the scraper are both designed to be inclined, and the scraper is integrally designed in a trapezoidal shape.

[0008] As a further preference of this technical solution, there are four groups of fixed blocks, and the four groups of fixed blocks are all equidistantly arranged on the outer wall of the transmission rod.

[0009] As a further preference of this technical solution, soft pads are provided on the surfaces of the extrusion plates facing the rotating rods, and anti-slip patterns are provided on the outer walls of the extrusion plates.

[0010] As a further preference of this technical solution, the outer surface of the positioning rod is designed to be semi-circular, and the limiting grooves and the sliding grooves are both opened as through holes adapted to the positioning rod.

[0011] As a further preference of this technical solution, the springs are provided at the middle positions on the inner walls of the sliding grooves. One end of the spring is welded to the inner wall of the sliding groove, and the other end of the spring is welded to the inner wall of the positioning rod.

[0012] The present utility model provides a detection device applicable to magnetic flux leakage of oil and gas pipelines, having the following beneficial effects:

[0013] 1. The utility model arranges a cleaning assembly on one end of the universal joint on the left side of the probe magnet section, so that the extrusion plate in the cleaning assembly is threadedly rotated on the threaded rod and squeezes the rotating rod, so that the rotating rod rotates in the fixed block, and the rotating rod drives the scraper to fit the inner wall of the pipeline, and then the transmission rod is driven by the motor to rotate, so that the scraper cleans the attachments on the inner wall of the pipeline, thereby reducing the interference of the probe magnet section during use, and further improving the accuracy of the detection result of the probe magnet section.

[0014] 2. The utility model achieves the purpose of disassembling the pulley by setting a connecting assembly between the universal joint and the connecting assembly, sliding the positioning rod in the connecting assembly into the slide groove, and then sliding the pulley out of the sleeve, and then sliding the pulley into the sleeve, and then pushing the positioning rod to reset and slide in the slide groove and pass through the limit groove under the push of the spring restoring force, so as to achieve the purpose of replacing the pulley, so that the staff can replace the pulley, and the difficulty coefficient of replacing the pulley is further reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the first three-dimensional cross-sectional structure of the utility model;

[0017] Figure 3 It is a second three-dimensional cross-sectional structural schematic diagram of the utility model;

[0018] Figure 4 It is a third three-dimensional cross-sectional structural schematic diagram of the utility model;

[0019] Figure 5 For the utility model Figure 3 A schematic diagram of the enlarged structure at point A;

[0020] Figure 6 For the utility model Figure 2 A schematic diagram of the enlarged structure at B;

[0021] Figure 7 For the utility model Figure 4 Enlarged structural diagram at C.

[0022] In the figure: 1. probe magnet section; 2. universal joint; 3. battery section; 4. pulley; 5. cleaning assembly; 51. fixing seat; 52. motor; 53. leather cup; 54. transmission rod; 55. fixing block; 56. rotating rod; 57. torsion spring; 58. scraper; 59. threaded rod; 510. extrusion plate; 6. connecting assembly; 61. sleeve; 62. slide groove; 63. spring; 64. positioning rod; 65. limit groove. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0024] The utility model provides a technical solution: Figures 1 to 7 As shown, in this embodiment, a detection device for magnetic leakage of oil and gas pipelines includes a probe magnet section 1, a universal joint 2, a battery section 3 and a pulley 4. The universal joint 2 is provided with three groups. Universal joints 2 are provided on both sides of the probe magnet section 1. A battery section 3 is provided on the right side of the universal joint 2. Another group of universal joints 2 is provided on the right side of the battery section 3. Three groups of pulleys 4 are provided on the right side of the universal joint 2. A cleaning component 5 is provided on the left end of the universal joint 2 on the left side of the probe magnet section 1. A connecting component 6 is provided between the universal joint 2 and the pulley 4. The cleaning component 5 includes A fixing seat 51 is arranged on the universal joint 2 on the left side of the probe magnet section 1, and a motor 52 is built into the fixing seat 51. A leather cup 53 is arranged on the left side of the fixing seat 51, and a transmission rod 54 is arranged on the output end of the motor 52. A plurality of fixed blocks 55 are arranged on the transmission rod 54. A rotating rod 56 is rotated inside the fixed blocks 55. Torsion springs 57 are wound around the surfaces of both ends of the rotating rod 56. A scraper 58 is arranged on the outer end surface of the rotating rod 56. A threaded rod 59 is arranged on the left end of the transmission rod 54, and an extrusion plate 510 is threadedly connected to the threaded rod 59.

[0025] A cleaning assembly 5 is provided on one end of the universal joint 2 on the left side of the probe magnet section 1, so that the extrusion plate 510 in the cleaning assembly 5 is threadedly rotated on the threaded rod 59 and the rotating rod 56 is squeezed, so that the rotating rod 56 rotates in the fixed block 55, and the rotating rod 56 drives the scraper 58 to fit the inner wall of the pipe, and then the transmission rod 54 is driven by the motor 52 to rotate, so that the scraper 58 cleans the attachments on the inner wall of the pipe, thereby reducing the interference of the probe magnet section 1 during use, and further improving the accuracy of the detection result of the probe magnet section 1.

[0026] In other embodiments, the connecting assembly 6 includes a sleeve 61 provided on the right end of the universal joint 2, the pulley 4 is slidably connected in the sleeve 61, the surface of the pulley 4 is provided with a slide groove 62, the inner wall of the slide groove 62 is provided with a spring 63, the other end of the spring 63 is fixedly connected with a positioning rod 64, and the inner wall of the sleeve 61 corresponding to the outer end surface of the positioning rod 64 is provided with a limiting groove 65;

[0027] By setting the connecting assembly 6 between the universal joint 2 and the connecting assembly 6, the pulley 4 can be disassembled by sliding the positioning rod 64 in the connecting assembly 6 into the slide groove 62, and then sliding the pulley 4 out of the sleeve 61. The pulley 4 can be replaced by sliding the pulley 4 into the sleeve 61, and then the positioning rod 64 is pushed by the restoring force of the spring 63 to return to the slide groove 62 and slide through the limit groove 65, so that the staff can replace the pulley 4, which further reduces the difficulty coefficient of replacing the pulley 4.

[0028] In other embodiments, the front and rear end surfaces of the scraping plate 58 are both inclined, and the scraping plate 58 is integrally trapezoidal in design;

[0029] With this design, the scraping plate 58 can still clean the attachments on the inner wall of the pipeline under the drive of the forward and reverse rotation of the motor 52. Further improve the cleaning ability of the scraping plate 58.

[0030] In other embodiments, four groups of fixing blocks 55 are provided, and the four groups of fixing blocks 55 are all equidistantly arranged on the outer wall of the transmission rod 54;

[0031] With this design, when it is necessary to clean the attachments on the inner wall of the pipeline, the motor 52 drives the four groups of scraping plates 58 to rotate through the fixing blocks 55, and scrapes the attachments on the inner wall of the pipeline, further improving the cleaning efficiency and cleaning area of the scraping plates 58.

[0032] In other embodiments, soft pads are provided on the surface of the pressing plate 510 facing the rotating rod 56, and anti-slip patterns are provided on the outer wall of the pressing plate 510;

[0033] With this design, the contact between the pressing plate 510 and the rotating rod 56 can be reduced, preventing damage to the surface of the rotating rod 56 when the pressing plate 510 rotates and presses the rotating rod 56 on the threaded rod 59, and at the same time preventing the situation of hand slipping when the staff rotates the pressing plate 510.

[0034] In other embodiments, the outer end surface of the positioning rod 64 is semicircular in design, and the limiting groove 65 and the sliding groove 62 are both opened as through holes adapted to the positioning rod 64;

[0035] With this design, when it is necessary to disassemble the pulley 4, when the outer end surface of the positioning rod 64 slides to the inner wall of the sleeve 61, by pulling the pulley 4 in the direction away from the sleeve 61, the inner wall of the sleeve 61 presses against the outer wall of the positioning rod 64, and the positioning rod 64 slides into the sliding groove 62, so as to achieve the purpose of quickly disassembling the pulley 4.

[0036] In other embodiments, the spring 63 is arranged at the middle position on the inner wall of the sliding groove 62, one end of the spring 63 is welded to the inner wall of the sliding groove 62, and the other end of the spring 63 is welded to the inner wall of the positioning rod 64;

[0037] With this design, the elastic force output on both sides of the spring 63 can be evenly transmitted to both sides of the positioning rod 64, preventing the spring 63 from shifting in the sliding groove 62, so that the elastic force output on both sides of the spring 63 cannot be evenly transmitted to both sides of the positioning rod 64, and further preventing the situation that the positioning rod 64 is prone to jamming during the sliding process in the sliding groove 62.

[0038] The utility model provides a detection device for magnetic flux leakage in oil and gas pipelines, and the specific working principle is as follows:

[0039] When in use, first rotate the extrusion plate 510 so that the extrusion plate 510 rotates on the threaded rod 59 and squeezes the rotating rod 56, so that the rotating rod 56 rotates in the fixed block 55, and the rotating rod 56 drives the scraper 58 to fit the inner wall of the pipeline, then all the leakage magnetic detection devices are placed in the pipeline, and by starting the motor 52, the motor 52 drives the scraper 58 to rotate through the transmission rod 54, and the scraper 58 cleans the attachments on the inner wall of the pipeline. When the pulley 4 is damaged and needs to be replaced, the pulley 4 can be disassembled by sliding the positioning rod 64 in the connecting assembly 6 into the slide groove 62, and then sliding the pulley 4 out of the sleeve 61. Then, the pulley 4 is slid into the sleeve 61, and then the positioning rod 64 is pushed to reset and slide in the slide groove 62 and pass through the limit groove 65 under the push of the restoring force of the spring 63, so as to achieve the purpose of replacing the pulley 4.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for detecting magnetic flux leakage in oil and gas pipelines, comprising a probe magnet section (1), a universal joint (2), a battery section (3) and a pulley (4), wherein the universal joint (2) is provided in three groups, universal joints (2) are provided on both sides of the probe magnet section (1), a battery section (3) is provided on the right side of the universal joint (2), another group of universal joints (2) is provided on the right side of the battery section (3), and three groups of pulleys (4) are provided on the right side of the universal joint (2), characterized in that: A cleaning assembly (5) is provided on the left end of the universal joint (2) on the left side of the probe magnet section (1), and a connecting assembly (6) is provided between the universal joint (2) and the pulley (4). The cleaning assembly (5) comprises a fixing seat (51) arranged on the universal joint (2) on the left side of the probe magnet section (1), the fixing seat (51) having a motor (52) built therein, a leather cup (53) being provided on the left side of the fixing seat (51), a transmission rod (54) being provided on the output end of the motor (52), a plurality of fixing blocks (55) being provided on the transmission rod (54), a rotating rod (56) being rotatable in each of the fixing blocks (55), a torsion spring (57) being wound around the surfaces of both ends of the rotating rod (56), a scraper (58) being provided on the outer end surface of each of the rotating rods (56), a threaded rod (59) being provided at the left end of the transmission rod (54), and an extrusion plate (510) being threadedly connected to the threaded rod (59).

2. The device for detecting magnetic flux leakage in oil and gas pipelines according to claim 1, characterized in that: The connecting assembly (6) comprises a sleeve (61) provided on the right end of the universal joint (2), a pulley (4) being slidably connected inside the sleeve (61), a sliding groove (62) being provided on the surface of the pulley (4), a spring (63) being provided on the inner wall of the sliding groove (62), a positioning rod (64) being fixedly connected to the other end of the spring (63), and a limiting groove (65) being provided on the inner wall of the sleeve (61) corresponding to the outer end surface of the positioning rod (64).

3. The device for detecting magnetic flux leakage in oil and gas pipelines according to claim 1, characterized in that: The front and rear end surfaces of the scraper (58) are both designed to be inclined, and the scraper (58) is designed to be trapezoidal as a whole.

4. The device for detecting magnetic flux leakage in oil and gas pipelines according to claim 1, characterized in that: Four groups of the fixing blocks (55) are provided, and the four groups of the fixing blocks (55) are all arranged at equal intervals on the outer wall of the transmission rod (54).

5. The device for detecting magnetic flux leakage in oil and gas pipelines according to claim 1, characterized in that: A soft pad is provided on the surface of the extrusion plate (510) on one side facing the rotating rod (56), and an anti-slip pattern is provided on the outer wall of the extrusion plate (510).

6. The device for detecting magnetic flux leakage in oil and gas pipelines according to claim 2, characterized in that: The outer end surface of the positioning rod (64) is designed to be semicircular, and the limiting groove (65) and the sliding groove (62) are both formed as through holes that are compatible with the positioning rod (64).

7. The device for detecting magnetic flux leakage in oil and gas pipelines according to claim 2, characterized in that: The spring (63) is arranged at a middle position on the inner wall of the slide groove (62), one end of the spring (63) is welded to the inner wall of the slide groove (62), and the other end of the spring (63) is welded to the inner wall of the positioning rod (64).

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