Self-cleaning guide roller device for vortex demagnetization of oil casing

Abstract

The utility model discloses a self-cleaning guide roller device for oil casing vortex demagnetization, and relates to the technical field of guide roller deashing, the self-cleaning guide roller device comprises a conveying frame, guide roller bodies distributed at equal intervals are arranged in the conveying frame, two ends of each guide roller body are fixedly connected with rotating shafts, the rotating shafts are rotatably connected with the inner walls of two sides of the conveying frame, and the rotating shafts are connected with the inner walls of two sides of the conveying frame. A steel pipe body is arranged at the top of the guide roller body, a vertical plate is fixedly connected to the bottom of the conveying frame, a bottom plate is fixedly connected to the bottom end of the vertical plate, and a driving assembly is fixedly connected to the outer wall of the top of the bottom plate. On the premise that a power device is not additionally arranged, the function of continuously and automatically removing dust on the guide roller body is achieved, the stability of the detection linear speed is effectively improved, the detection precision and the mechanism efficiency are improved, meanwhile, oxide skin accumulated below the guide roller body can be rapidly scraped away by the scraper blade, and the production efficiency is improved. Manual operation is not needed, and the working intensity of people is relieved.

Description

Technical Field

[0001] The utility model relates to the technical field of eddy current demagnetization equipment, in particular to a self-cleaning guide roller device for eddy current demagnetization of oil casing. Background Art

[0002] When conducting non-destructive testing on casing in the casing inspection line, commercially available magnetic flux leakage detectors must magnetize the casing before conducting non-destructive testing. As the steel pipe under inspection rapidly passes through the equipment's magnetization zone along its axis, it is subjected to an axial steady-state magnetization field, resulting in saturation magnetization. For normal areas of the pipe, the magnetic flux converges and reaches saturation, preventing leakage of flux from the pipe to the surrounding area. However, for defects on the pipe's outer and inner walls, such as cracks, corrosion pits, inclusions, folds, and pits, the magnetic flux within the pipe is refracted from the defect interface to the surrounding area due to the high magnetic resistance of the defects, forming a leakage magnetic field. Computer processing accurately identifies the defective areas of the casing. Therefore, the magnetized casing requires demagnetization, otherwise it will affect both the quality of the casing and subsequent defect detection.

[0003] Eddy current testing is a non-contact testing method that uses electromagnetic induction between metals and an electromagnetic field. It is one of the most widely used non-destructive testing methods in industry. During the testing process, a magnetized workpiece enters the test coil, inducing eddy currents within the workpiece. This influence causes the coil current to change. Since the magnitude of the eddy currents varies with the size of the defect within the workpiece, the change in the test coil current can indicate the presence of the defect. Due to future use and processing requirements, the workpiece must be demagnetized after testing to ensure that the residual magnetism does not exceed 3 mT (3 gs).

[0004] Currently, the demagnetization devices of conventional eddy current testing equipment only have a demagnetization function. During the steel pipe inspection process, residual oxide scale often accumulates on the steel pipe due to loosening and shedding. This accumulates on the guide rollers that enter the inspection mechanism, affecting the stability of the inspection line speed. This can only be removed by stopping the machine for cleaning, a time-consuming and labor-intensive process. Therefore, a self-cleaning guide roller device for eddy current demagnetization of oil casing and tubing has been proposed to address this issue. Utility Model Content

[0005] The purpose of the present application is to provide a self-cleaning guide roller device for eddy current demagnetization of oil casing to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present application provides the following technical solution: a self-cleaning guide roller device for eddy current demagnetization of oil casing, comprising a conveyor frame, wherein guide roller bodies are arranged equidistantly inside the conveyor frame, wherein both ends of the guide roller bodies are fixedly connected to a rotating shaft, wherein the rotating shaft is rotatably connected to both side inner walls of the conveyor frame, a steel pipe body is arranged on the top of the guide roller body, a vertical plate is fixedly connected to the bottom of the conveyor frame, the bottom end of the vertical plate is fixedly connected to a bottom plate, and the top outer wall of the bottom plate is fixedly connected to a drive assembly;

[0007] A fourth gear plate and a fifth gear plate are fixedly connected to the circumferential outer wall of the rotating shaft, the fourth gear plate is engaged with a third chain, and the fourth gear plate is transmission-connected to another fourth gear plate via the third chain;

[0008] The fifth gear plate is engaged with a second chain, and the fifth gear plate is transmission-connected to another fifth gear plate via the second chain;

[0009] A cleaning belt is provided on the top of the conveying frame. The number of the cleaning belts is two groups, and the cross section of the cleaning belt is triangular.

[0010] Preferably, the drive assembly includes a motor arranged on the top of the base plate, the circumferential outer wall of the motor is fixedly connected to a support seat, the output end of the motor is fixedly connected to a first transmission wheel, the circumferential outer wall of the first transmission wheel is transmission-connected to a transmission belt, and the transmission belt is transmission-connected to a fourth transmission wheel.

[0011] Preferably, the circumferential inner wall of the fourth transmission wheel is fixedly connected to a rotating rod, the circumferential outer wall of the rotating rod is fixedly connected to a third gear plate, the third gear plate is meshed with a first chain, and the first chain is meshed with another fifth gear plate.

[0012] Preferably, a second gear plate is fixedly connected to the circumferential outer wall of the rotating rod, and the second gear plate is meshed with the first gear plate.

[0013] Preferably, a rotating rod is fixedly connected to the circumferential inner wall of the first gear plate, a fifth transmission wheel is fixedly connected to the circumferential outer wall of the rotating rod, the fifth transmission wheel is transmission-connected to the cleaning belt, the wrap angle between the cleaning belt and the fifth transmission wheel is greater than 120°, a rectangular groove is provided on the top of the conveyor frame, and the cleaning belt passes through the inside of the rectangular groove.

[0014] Preferably, a transverse plate is fixedly connected to an outer wall of one side of the conveying frame, the transverse plate is rotatably connected to a first rotating column, the circumferential outer wall of the first rotating column is fixedly connected to a second transmission wheel, the inner walls on both sides of the rectangular groove are rotatably connected to a third rotating column, the circumferential outer wall of the third rotating column is fixedly connected to a third transmission wheel, and the second transmission wheel and the third transmission wheel are both transmission-connected to the cleaning belt.

[0015] Preferably, one side of each of the two groups of cleaning belts is fixedly connected with a scraper, the scraper is made of rubber material, and the bottom of the scraper is in contact with the bottom inner wall of the conveying frame.

[0016] In summary, the technical effects and advantages of the utility model are:

[0017] 1. In the present invention, the drive assembly is provided, which can realize the continuous automatic cleaning function of the guide roller body without adding a new power device, which not only effectively improves the stability of the detection line speed, but also improves the detection accuracy and mechanism efficiency.

[0018] 2. In the utility model, by providing a cleaning belt, a third transmission wheel, a fourth transmission wheel, a fifth transmission wheel and a scraper, when processing the oxide scale accumulated under the guide roller body, the scraper can quickly scrape it off without manual operation, thereby reducing people's work intensity. At the same time, the cleaning belt is distributed in a triangular shape, ensuring that the scraper always remains stable when scraping the oxide scale. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 Schematic diagram of the three-dimensional structure in this embodiment;

[0021] Figure 2 For this embodiment Figure 1 Schematic diagram of the enlarged structure at A in the middle;

[0022] Figure 3 Schematic diagram of the top view of the structure of this embodiment;

[0023] Figure 4 This is a schematic diagram of a partially enlarged structure of the driving component in this embodiment.

[0024] In the figure: 1. conveyor frame; 2. guide roller body; 3. vertical plate; 4. bottom plate; 5. support base; 6. motor; 7. first transmission wheel; 8. transmission belt; 9. steel pipe body; 10. first gear plate; 12. second gear plate; 13. first chain; 14. cleaning belt; 15. second transmission wheel; 16. first rotating column; 17. horizontal plate; 18. third gear plate; 19. rectangular groove; 20. second chain; 21. third chain; 22. fourth gear plate; 23. fifth gear plate; 24. third transmission wheel; 25. fourth transmission wheel; 26. scraper; 27. third rotating column;

[0025] a-Demagnetization mechanism. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Example: Reference Figure 1-4 The self-cleaning guide roller device for eddy current demagnetization of oil casing shown in the figure comprises a conveyor frame 1, wherein guide roller bodies 2 distributed at equal distances are arranged inside the conveyor frame 1, both ends of the guide roller bodies 2 are fixedly connected to a rotating shaft, and the rotating shaft is rotatably connected to the inner walls of both sides of the conveyor frame 1, a steel pipe body 9 is arranged on the top of the guide roller body 2, a vertical plate 3 is fixedly connected to the bottom of the conveyor frame 1, the bottom end of the vertical plate 3 is fixedly connected to the bottom plate 4, and the top outer wall of the bottom plate 4 is fixedly connected to the driving component;

[0028] The outer circumferential wall of the rotating shaft is fixedly connected to a fourth gear plate 22 and a fifth gear plate 23. The fourth gear plate 22 is meshed with a third chain 21. The fourth gear plate 22 is transmission-connected to another fourth gear plate 22 via the third chain 21.

[0029] The fifth gear plate 23 is meshed with the second chain 20 , and the fifth gear plate 23 is transmission-connected to another fifth gear plate 23 via the second chain 20 ;

[0030] A cleaning belt 14 is provided on the top of the conveying frame 1 . There are two groups of cleaning belts 14 , and the cross section of the cleaning belt 14 is triangular.

[0031] The driving assembly includes a motor 6 arranged on the top of the base plate 4, the circumferential outer wall of the motor 6 is fixedly connected to the support base 5, the output end of the motor 6 is fixedly connected to the first transmission wheel 7, the circumferential outer wall of the first transmission wheel 7 is transmission-connected to the transmission belt 8, the transmission belt 8 is transmission-connected to the fourth transmission wheel 25, the circumferential inner wall of the fourth transmission wheel 25 is fixedly connected to the rotating rod, the circumferential outer wall of the rotating rod is fixedly connected to the third gear plate 18, the third gear plate 18 is meshed with the first chain 13, and the first chain 13 is meshed with another fifth gear plate 23.

[0032] The circumferential outer wall of the rotating rod is fixedly connected to the second gear plate 12, the second gear plate 12 is meshed with the first gear plate 10, the circumferential inner wall of the first gear plate 10 is fixedly connected to the rotating rod, the circumferential outer wall of the rotating rod is fixedly connected to the fifth transmission wheel, the fifth transmission wheel is transmission-connected to the cleaning belt 14, the wrap angle between the cleaning belt 14 and the fifth transmission wheel is greater than 120°, and a rectangular groove 19 is provided on the top of the conveying frame 1. The cleaning belt 14 passes through the inside of the rectangular groove 19, which can quickly remove the oxide scale accumulated under the guide roller body 2. The whole process can realize the continuous automatic cleaning function of the guide roller body 2 without adding a new power device, which not only effectively improves the stability of the detection line speed, but also improves the detection accuracy and mechanism efficiency.

[0033] A transverse plate 17 is fixedly connected to the outer wall of one side of the conveying frame 1, and the transverse plate 17 is rotatably connected to the first rotating column 16. The circumferential outer wall of the first rotating column 16 is fixedly connected to the second transmission wheel 15. The inner walls on both sides of the rectangular groove 19 are rotatably connected to the third rotating column 27. The circumferential outer wall of the third rotating column 27 is fixedly connected to the third transmission wheel 24. The second transmission wheel 15 and the third transmission wheel 24 are both transmission-connected to the cleaning belt 14. One side of the two groups of cleaning belts 14 is fixedly connected with a scraper 26. The scraper 26 is made of rubber material, and the bottom of the scraper 26 contacts the bottom inner wall of the conveying frame 1. During the rotation of the cleaning belt 14, through the action of the third transmission wheel 24 and the second transmission wheel 15, the cleaning belt 14 can be distributed in a triangular shape, thereby ensuring that the scraper 26 always remains stable when scraping the oxide scale.

[0034] Supplementary explanation of the above: the top of the conveying frame 1 is provided with an existing demagnetization mechanism a for demagnetizing the steel pipe body 9 .

[0035] The working principle of the utility model is as follows: the first transmission wheel 7 can be driven to rotate by starting the motor 6. During the rotation of the first transmission wheel 7, the fourth transmission wheel 25 can be rotated through the action of the transmission belt 8. When the fourth transmission wheel 25 rotates, the second gear plate 12 on the outer wall of the rotating rod can be driven to rotate. During the rotation of the second gear plate 12, the first gear plate 10 can be driven to rotate. When the first gear plate 10 rotates, the fifth transmission wheel on the outer wall of the rotating rod can be rotated, thereby driving the cleaning belt 14 to rotate. The transmission of the cleaning belt 14 can drive the scraper 26 on one side to quickly remove the oxide scale accumulated under the guide roller body 2. The whole process can realize the continuous automatic cleaning function of the guide roller body 2 without adding a new power device, which not only effectively improves the stability of the detection line speed, but also improves the detection accuracy and mechanism efficiency. At the same time, during the rotation of the cleaning belt 14, through the action of the third transmission wheel 24 and the second transmission wheel 15, the cleaning belt 14 can be distributed in a triangular shape, thereby ensuring that the scraper 26 always remains stable when scraping the oxide scale.

[0036] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A self-cleaning guide roller device for eddy current demagnetization of oil casing, comprising a conveying frame (1), characterized in that: The conveying frame (1) is provided with guide roller bodies (2) distributed at equal distances inside, both ends of the guide roller bodies (2) are fixedly connected with rotating shafts, the rotating shafts are rotatably connected with the inner walls of both sides of the conveying frame (1), the top of the guide roller bodies (2) is provided with a steel pipe body (9), the bottom of the conveying frame (1) is fixedly connected with a vertical plate (3), the bottom end of the vertical plate (3) is fixedly connected with a bottom plate (4), and the top outer wall of the bottom plate (4) is fixedly connected with a driving component; A fourth gear plate (22) and a fifth gear plate (23) are fixedly connected to the circumferential outer wall of the rotating shaft, the fourth gear plate (22) is meshed with a third chain (21), and the fourth gear plate (22) is transmission-connected to another fourth gear plate (22) via the third chain (21); The fifth gear plate (23) is meshed with a second chain (20), and the fifth gear plate (23) is transmission-connected to another fifth gear plate (23) via the second chain (20); A cleaning belt (14) is arranged on the top of the conveying frame (1), the number of the cleaning belts (14) is two groups, and the cross section of the cleaning belts (14) is triangular.

2. The self-cleaning guide roller device for eddy current demagnetization of oil casing according to claim 1, characterized in that: The driving assembly comprises a motor (6) arranged on the top of the base plate (4); the circumferential outer wall of the motor (6) is fixedly connected to a support seat (5); the output end of the motor (6) is fixedly connected to a first transmission wheel (7); the circumferential outer wall of the first transmission wheel (7) is transmission-connected to a transmission belt (8); and the transmission belt (8) is transmission-connected to a fourth transmission wheel (25).

3. The self-cleaning guide roller device for eddy current demagnetization of oil casing according to claim 2, characterized in that: The circumferential inner wall of the fourth transmission wheel (25) is fixedly connected to a rotating rod, the circumferential outer wall of the rotating rod is fixedly connected to a third gear plate (18), the third gear plate (18) is meshed with a first chain (13), and the first chain (13) is meshed with another fifth gear plate (23).

4. The self-cleaning guide roller device for eddy current demagnetization of oil casing according to claim 3, characterized in that: A second gear plate (12) is fixedly connected to the circumferential outer wall of the rotating rod, and the second gear plate (12) is meshed with the first gear plate (10).

5. The self-cleaning guide roller device for eddy current demagnetization of oil casing according to claim 4, characterized in that: The circumferential inner wall of the first gear plate (10) is fixedly connected to a rotating rod, the circumferential outer wall of the rotating rod is fixedly connected to a fifth transmission wheel, the fifth transmission wheel is transmission-connected to the cleaning belt (14), the wrap angle between the cleaning belt (14) and the fifth transmission wheel is greater than 120°, a rectangular groove (19) is provided on the top of the conveying frame (1), and the cleaning belt (14) passes through the inside of the rectangular groove (19).

6. The self-cleaning guide roller device for eddy current demagnetization of oil casing according to claim 5, characterized in that: A transverse plate (17) is fixedly connected to an outer wall of one side of the conveying frame (1), and the transverse plate (17) is rotatably connected to a first rotating column (16), and a second transmission wheel (15) is fixedly connected to a circumferential outer wall of the first rotating column (16), and third rotating columns (27) are rotatably connected to inner walls on both sides of the rectangular groove (19), and a third transmission wheel (24) is fixedly connected to a circumferential outer wall of the third rotating column (27), and the second transmission wheel (15) and the third transmission wheel (24) are both transmission-connected to the cleaning belt (14).

7. The self-cleaning guide roller device for eddy current demagnetization of oil casing according to claim 6, characterized in that: One side of the two groups of cleaning belts (14) is fixedly connected with a scraper (26), the scraper (26) is made of rubber material, and the bottom of the scraper (26) is in contact with the bottom inner wall of the conveying frame (1).

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