A device for detecting defects in the outer wall of long-distance oil and gas pipelines

Abstract

This utility model relates to the field of pipeline inspection technology and discloses a device for detecting defects on the outer wall of a long-distance oil and gas pipeline. The device includes: a first arc-shaped plate, which is arc-shaped; an adjustment structure comprising a first adjustment part and a second adjustment part; the first adjustment part including a third arc-shaped plate fixedly installed on one side of the outer wall of the first arc-shaped plate, the third arc-shaped plate having an arc-shaped groove inside, a fourth arc-shaped plate slidably installed within the arc-shaped groove, and a connecting block fixedly installed on one side of the outer wall of the fourth arc-shaped plate; the second adjustment part including a third fixing plate fixedly installed on one side of the outer wall of the third arc-shaped plate, and a fourth fixing plate fixedly installed on one side of the outer wall of the third fixing plate. This device expands the detection range of the pipeline, facilitating inspection of the lower side of the pipeline, and enabling inspection of pipelines of different sizes, thereby improving the pipeline inspection effect and increasing the flexibility of the device.

Description

Technical Field

[0001] This utility model belongs to the field of pipeline inspection technology, specifically, it relates to a device for detecting defects in the outer wall of long-distance oil and gas pipelines. Background Technology

[0002] Long-distance oil and gas pipelines are crucial infrastructure for transporting energy sources such as oil and natural gas, and their safe operation is essential for ensuring energy supply and social stability. However, during long-term operation, pipelines may develop defects such as corrosion, cracks, and dents on their outer walls due to various factors such as soil corrosion, external impacts, and material aging. If these defects are not detected and addressed in a timely manner, they may lead to pipeline leaks or even ruptures, causing serious safety accidents.

[0003] Utility model CN221801308U discloses a pipe external wall defect detection device, including a base and a movable ring located above the base. A rotating ring is rotatably connected to one side of the movable ring via a bearing. A detection block is fixedly installed above the inner cavity of the rotating ring. This utility model relates to the field of pipe inspection technology. This pipe external wall defect detection device uses a motor to drive a threaded rod to rotate, causing the threaded sleeve to move the movable ring and rotating ring on the sliding plate via a sliding sleeve. Simultaneously, a first gear rolls on a toothed plate, driving the rotating rod to rotate. The rotating rod, through a first bevel gear and a second bevel gear, drives a rotating rod to rotate. The rotating rod, through a second gear and a third gear, drives the rotating ring to rotate, thus causing the detection block on the rotating ring to move and rotate around the pipe surface. This allows for effective detection of the pipe external wall. It requires only one drive source, reducing energy consumption and lowering the cost of pipe inspection.

[0004] However, the above-mentioned patent still has the following problems: when the inner diameter of the pipe changes, the device may not be able to fit tightly against the outer wall of the pipe, resulting in uneven distance between the detection block and the outer wall of the pipe, which affects the accuracy and reliability of the detection. After the inner diameter of the pipe changes, the detection area increases, and the defects on the outer wall of the pipe may be distributed in the lower area of ​​the pipe. However, the detection range of the device is limited and it cannot perform comprehensive detection of the defect area of ​​the pipe.

[0005] In view of this, this utility model is hereby proposed. Utility Model Content

[0006] To address the aforementioned technical problem of limited detection range, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] A device for detecting defects in the outer wall of a long-distance oil and gas pipeline includes:

[0008] The first arc-shaped plate is in the shape of a circular arc.

[0009] The adjustment structure includes a first adjustment part and a second adjustment part. The first adjustment part includes a third arc-shaped plate fixedly installed on one side of the outer wall of the first arc-shaped plate. An arc-shaped groove is opened inside the third arc-shaped plate, and a fourth arc-shaped plate is slidably installed in the arc-shaped groove. A connecting block is fixedly installed on one side of the outer wall of the fourth arc-shaped plate. The second adjustment part includes a third fixing plate fixedly installed on one side of the outer wall of the third arc-shaped plate. A fourth fixing plate is fixedly installed on one side of the outer wall of the third fixing plate. Two sets of first rotating shafts are rotatably installed on one side of the outer wall of the third fixing plate. Pulleys are fixedly installed on the outer wall of the first rotating shafts. A transmission belt is sleeved between the two sets of pulleys. A first connecting plate is fixedly installed at one end of one set of first rotating shafts. One end of the first connecting plate is fixedly connected to the outer wall of the connecting block.

[0010] In a preferred embodiment of the present invention, the second adjustment part further includes a servo motor fixedly installed on the outer wall of one side of the fourth fixed plate, and the output shaft of the servo motor is fixedly connected to one end of another set of first rotating shafts through a coupling.

[0011] In a preferred embodiment of the present invention, a second fixed frame plate is fixedly installed on one side of the outer wall of the third arc-shaped plate. A first limiting groove is provided inside the second fixed frame plate. A first snap-fit ​​block is fixedly installed inside the first limiting groove. A second snap-fit ​​block is fixedly installed at one end of the fourth arc-shaped plate. The second snap-fit ​​block is provided with a snap-fit ​​groove. The first snap-fit ​​block is snap-fitted into the inside of the snap-fit ​​groove.

[0012] In a preferred embodiment of this utility model, a second arc-shaped plate is provided on the outside of the first arc-shaped plate. A set of first laser scanning plates is provided at the bottom of both the first and second arc-shaped plates. Three sets of first fixed frame plates are fixedly installed between the first and second arc-shaped plates. A first fixed plate is fixedly installed inside the first fixed frame plate. Three sets of fixed pulleys are provided inside the first fixed frame plate. A set of damping spring rods is fixedly installed between each set of fixed pulleys and one side outer wall of the first fixed plate, for a total of nine sets of damping spring rods.

[0013] In a preferred embodiment of this utility model, two sets of second fixing plates are fixedly installed between the three sets of first fixing frame plates. An infrared thermal imager scanning plate is provided at the bottom of the second fixing plate. A fifth fixing plate is fixedly installed on one side of the outer wall of the second arc-shaped plate. An electrical control box is fixedly installed on one side of the outer wall of the fifth fixing plate.

[0014] In a preferred embodiment of the present invention, a second laser scanning plate is provided on one outer wall of the fourth arc-shaped plate.

[0015] In a preferred embodiment of this utility model, the first laser scanning plate, the infrared thermal imager scanning plate, the second laser scanning plate, and the electrical control box are electrically connected.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. To expand the detection range of the detection device, making it easier to detect the lower side of the pipeline, to detect pipelines of different sizes, to improve the detection effect of the pipeline, and to increase the flexibility of the device in use.

[0018] 2. To achieve the purpose of assisting in the positioning of the detection device, improving the stability of the device in use, providing auxiliary support for the outer wall of the pipe, making it easier to place the device on the outer wall of pipes of different diameters, expanding the applicability of the device, and improving the fixing effect of the device.

[0019] 3. To achieve the purpose of power supply control scanning and detection of the device, simplify the operation steps of the device, improve the detection efficiency of the device, and optimize the user experience of the device.

[0020] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0021] In the attached diagram:

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the first fixed frame plate structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the second fixing plate structure of this utility model;

[0025] Figure 4 This is a schematic diagram of the third arc-shaped plate structure of this utility model;

[0026] Figure 5 This is a schematic diagram of the fourth arc-shaped plate structure of this utility model;

[0027] Figure 6 This is a schematic diagram of the third fixing plate structure of this utility model;

[0028] Figure 7 This is a schematic diagram of the pulley structure of this utility model.

[0029] In the diagram: 10. First arc-shaped plate; 11. Second arc-shaped plate; 12. First laser scanning plate; 13. First fixed frame plate; 14. First fixed plate; 15. Fixed pulley; 16. Damping spring rod; 17. Second fixed plate; 18. Infrared thermal imager scanning plate; 19. Third arc-shaped plate; 20. Fourth arc-shaped plate; 21. Third fixed plate; 22. Fourth fixed plate; 23. Servo motor; 24. First rotating shaft; 25. Pulley; 26. Transmission belt; 27. First locking block; 28. First limiting groove; 29. ​​First connecting plate; 30. Fifth fixed plate; 31. Electrical control box; 32. Second fixed frame plate; 33. Locking groove; 34. Second locking block; 35. Second laser scanning plate; 36. Connecting block. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0031] Example 1: A device for detecting defects in the outer wall of a long-distance oil and gas pipeline, specifically as follows: Figure 1 , Figure 4 , Figure 5 and Figure 6 As shown, the system includes a first arc-shaped plate 10, which is arc-shaped; an adjustment structure, which includes a first adjustment part and a second adjustment part. The first adjustment part includes a third arc-shaped plate 19 fixedly installed on one side of the outer wall of the first arc-shaped plate 10. An arc-shaped groove is opened inside the third arc-shaped plate 19, and a fourth arc-shaped plate 20 is slidably installed in the arc-shaped groove. A connecting block 36 is fixedly installed on one side of the outer wall of the fourth arc-shaped plate 20. The second adjustment part includes a third fixing plate 21 fixedly installed on one side of the outer wall of the third arc-shaped plate 19. A fourth fixing plate 22 is fixedly installed on one side of the outer wall of the third fixing plate 21. Two sets of first rotating shafts 24 are rotatably installed on one side of the outer wall of the third fixing plate 21. A pulley 25 is fixedly installed on the outer wall of the first rotating shaft 24. A transmission belt 26 is sleeved between the two sets of pulleys 25. A first connecting plate 29 is fixedly installed at one end of one set of first rotating shafts 24. One end of the first connecting plate 29 is fixedly connected to the outer wall of the connecting block 36. The detection area of ​​the detection device is expanded by adjusting the structure, thereby improving the detection capability of the device. The servo motor 23 is started, which drives a set of first rotating shafts 24 to rotate. Through the pulley 25 and the transmission belt 26, another set of first rotating shafts 24 are driven to rotate, which drives the first connecting plate 29 to move. Under the connection of the connecting block 36, the fourth arc plate 20 is driven to move on the third arc plate 19.

[0032] Specifically, such as Figure 1 , Figure 4 , Figure 5 and Figure 6As shown, the second adjustment unit also includes a servo motor 23 fixedly installed on the outer wall of one side of the fourth fixed plate 22. The output shaft of the servo motor 23 is fixedly connected to one end of another set of first rotating shafts 24 via a coupling.

[0033] Based on the above, the structure of the first arc plate 10, the third arc plate 19, the fourth arc plate 20, the third fixing plate 21, the fourth fixing plate 22, the servo motor 23, the first rotating shaft 24, the pulley 25, the transmission belt 26, the first connecting plate 29, and the connecting block 36 achieves the purpose of expanding the detection range of the detection device, facilitating the detection of the lower side of the pipeline, facilitating the detection of pipelines of different sizes, improving the detection effect of the pipeline, and increasing the flexibility of the device in use.

[0034] Example 2: Based on Example 1, specifically as follows... Figure 4 , Figure 5 and Figure 7 As shown, a second fixed frame plate 32 is fixedly installed on one outer wall of the third arc-shaped plate 19. A first limiting groove 28 is formed inside the second fixed frame plate 32, and a first snap-fit ​​block 27 is fixedly installed inside the first limiting groove 28. A second snap-fit ​​block 34 is fixedly installed at one end of the fourth arc-shaped plate 20. The second snap-fit ​​block 34 has a snap-fit ​​groove 33, and the first snap-fit ​​block 27 snaps into the groove 33. During the movement of the fourth arc-shaped plate 20, the second snap-fit ​​block 34 can move into the interior of the second fixed frame plate 32, and the first snap-fit ​​block 27 can snap into the groove 33, allowing the fourth arc-shaped plate 20 to surround the lower side of the pipe.

[0035] Specifically, such as Figure 1 and Figure 2 As shown, a second arc-shaped plate 11 is provided on the outside of the first arc-shaped plate 10. A set of first laser scanning plates 12 is provided at the bottom of both the first arc-shaped plate 10 and the second arc-shaped plate 11. Three sets of first fixed frame plates 13 are fixedly installed between the first arc-shaped plate 10 and the second arc-shaped plate 11. A first fixed plate 14 is fixedly installed inside the first fixed frame plate 13. Three sets of fixed pulleys 15 are provided inside the first fixed frame plate 13. A set of damping spring rods 16 is fixedly installed between each set of fixed pulleys 15 and one side of the outer wall of the first fixed plate 14, for a total of nine sets of damping spring rods 16. The first fixed frame plate 13 is fixed by the first arc-shaped plate 10 and the second arc-shaped plate 11, and the damping spring rods 16 are supported by the first fixed plate 14 and the fixed pulleys 15, so that the outer wall of the damping spring rod 16 is in close contact with the outer wall of the pipe.

[0036] Based on the above, the structure of the first arc plate 10, the second arc plate 11, the first laser scanning plate 12, the first fixed frame plate 13, the first fixed plate 14, the fixed pulley 15, the damping spring rod 16, the third arc plate 19, the first snap-fit ​​block 27, the first limiting groove 28, the snap-fit ​​groove 33, and the second snap-fit ​​block 34 achieves the purpose of assisting in the positioning of the detection device, improving the stability of the device, providing auxiliary support for the outer wall of the pipe, facilitating the placement of the device on the outer wall of pipes of different diameters, expanding the applicability of the device, and improving the fixing effect of the device.

[0037] Example 3: Based on Examples 1 and 2, specifically as follows... Figure 1 , Figure 2 and Figure 3 As shown, two sets of second fixing plates 17 are fixedly installed between the three sets of first fixing frame plates 13. An infrared thermal imager scanning plate 18 is provided at the bottom of the second fixing plate 17. A fifth fixing plate 30 is fixedly installed on one outer wall of the second arc-shaped plate 11, and an electrical control box 31 is fixedly installed on one outer wall of the fifth fixing plate 30. The infrared thermal imager scanning plate 18 is fixed by the second fixing plates 17, and the electrical control box 31 is fixed by the fifth fixing plate 30.

[0038] Specifically, such as Figure 5 As shown, a second laser scanning plate 35 is provided on one outer wall of the fourth arc-shaped plate 20.

[0039] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, the first laser scanning board 12, the infrared thermal imager scanning board 18, the second laser scanning board 35, and the electrical control box 31 are electrically connected. The electrical control box 31 supplies power to the first laser scanning board 12, the infrared thermal imager scanning board 18, and the second laser scanning board 35.

[0040] The first laser scanning plate 12 and the second laser scanning plate 35 scan the outer wall of the pipe by emitting laser beams to acquire three-dimensional point cloud data of the pipe's outer wall. Through analysis and processing of the point cloud data, geometric defects such as depressions and protrusions on the pipe's outer wall can be detected. Laser scanners are characterized by high precision and high resolution, enabling accurate detection of minute geometric changes. The infrared thermal imager scanning plate 18 is used to detect the temperature distribution on the pipe's outer wall. When defects such as corrosion or cracks exist on the pipe's outer wall, the thermal conductivity of the defective areas differs from that of normal areas, leading to abnormal temperature distributions. The infrared thermal imager captures infrared radiation from the pipe's outer wall and converts it into a temperature image, allowing for direct observation of abnormal temperature areas and thus determining whether defects exist on the pipe's outer wall. This is existing technology and will not be elaborated further.

[0041] In summary, the structure of the first fixed frame plate 13, the second fixed plate 17, the infrared thermal imager scanning plate 18, the fifth fixed plate 30, the electrical control box 31, and the second laser scanning plate 35 achieves the purpose of power supply control scanning detection of the device, simplifies the operation steps of the device, improves the detection efficiency of the device, and optimizes the user experience of the device.

[0042] Working Principle: The device expands the detection area through an adjustment structure to improve detection capability. The adjustment structure includes a first adjustment section and a second adjustment section. In the first adjustment section, a third arc-shaped plate 19 is fixed to one side of the outer wall of the first arc-shaped plate 10, and a fourth arc-shaped plate 20 is slidably installed within its internal arc-shaped groove. A connecting block 36 on one side of the outer wall of the fourth arc-shaped plate 20 provides a connection point for subsequent transmission. In the second adjustment section, a third fixed plate 21 is fixed to one side of the outer wall of the third arc-shaped plate 19, and a fourth fixed plate 22 is fixed to one side of the outer wall of the third fixed plate 21. Two sets of first rotating shafts 24 are rotatably installed on one side of the outer wall of the third fixed plate 21. Pulleys 25 are fixed to the outer wall of the first rotating shafts 24, and a transmission belt 26 is sleeved between the two sets of pulleys 25. One end of one set of first rotating shafts 24 is fixed to a first connecting plate 29, and one end of the first connecting plate 29 is fixedly connected to the outer wall of the connecting block 36. A servo motor 23 is fixed to one side of the outer wall of the fourth fixed plate 22, and its output shaft is fixedly connected to one end of the other set of first rotating shafts 24 via a coupling. The servo motor 23 is started, which drives a set of first rotating shafts 24 to rotate. Through the pulley 25 and the transmission belt 26, another set of first rotating shafts 24 are driven to rotate, which drives the first connecting plate 29 to move. Under the connection of the connecting block 36, the fourth arc plate 20 is driven to move in the arc groove of the third arc plate 19. The second fixed frame plate 32 is fixed on one side of the outer wall of the third arc plate 19. The first limiting groove 28 is opened inside the second fixed frame plate 32. The first locking block 27 is fixed in the first limiting groove 28. The second locking block 34 is fixed at one end of the fourth arc plate 20. The second locking block 34 has a locking groove 33. During the movement of the fourth arc plate 20, the second snap-fit ​​block 34 can move into the interior of the second fixed frame plate 32, and the first snap-fit ​​block 27 snaps into the interior of the snap-fit ​​groove 33, so that the fourth arc plate 20 surrounds the lower side of the pipe, thereby expanding the detection area. The second arc plate 11 is set outside the first arc plate 10, and a set of first laser scanning plates 12 is set at the bottom of both. Three sets of first fixed frame plates 13 are fixedly installed between the first arc plate 10 and the second arc plate 11. The first fixed plate 14 is fixed inside the first fixed frame plate 13, and three sets of fixed pulleys 15 are set. A set of damping spring rods 16 is fixed between each set of fixed pulleys 15 and the outer wall of one side of the first fixed plate 14, for a total of nine sets of damping spring rods 16. The first fixed frame plate 13 is fixed by the first arc plate 10 and the second arc plate 11. The damping spring rod 16 is supported by the first fixed plate 14 and the fixed pulley 15, so that the outer wall of the damping spring rod 16 is in close contact with the outer wall of the pipe, ensuring stable contact between the device and the pipe during detection. Two sets of second fixed plates 17 are fixedly installed between the three sets of first fixed frame plates 13. An infrared thermal imager scanning plate 18 is set at the bottom of the second fixed plate 17. A fifth fixed plate 30 is fixedly installed on one side of the outer wall of the second arc plate 11. An electrical control box 31 is fixedly installed on one side of the outer wall of the fifth fixed plate 30.The infrared thermal imager scanning plate 18 is fixed by the second fixing plate 17, and the electrical control box 31 is fixed by the fifth fixing plate 30. A second laser scanning plate 35 is installed on one side of the outer wall of the fourth arc-shaped plate 20. The first laser scanning plate 12, the infrared thermal imager scanning plate 18, the second laser scanning plate 35, and the electrical control box 31 are electrically connected. The electrical control box 31 supplies power to the first laser scanning plate 12, the infrared thermal imager scanning plate 18, and the second laser scanning plate 35. After being powered on, each scanning plate performs defect detection on the outer wall of the pipeline, realizing the device's comprehensive detection function of the pipeline's outer wall.

[0043] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. An apparatus for detecting defects in the outer wall of a long oil and gas pipeline, characterized in that, include: The first arc-shaped plate (10) is arc-shaped; The adjustment structure includes a first adjustment part and a second adjustment part. The first adjustment part includes a third arc-shaped plate (19) fixedly installed on one side of the outer wall of the first arc-shaped plate (10). An arc-shaped groove is opened inside the third arc-shaped plate (19), and a fourth arc-shaped plate (20) is slidably installed in the arc-shaped groove. A connecting block (36) is fixedly installed on one side of the outer wall of the fourth arc-shaped plate (20). The second adjustment part includes a third fixing plate (21) fixedly installed on one side of the outer wall of the third arc-shaped plate (19). A fourth fixing plate (22) is fixedly installed on one side of the outer wall of the fixing plate (21). Two sets of first rotating shafts (24) are rotatably installed on one side of the outer wall of the third fixing plate (21). A pulley (25) is fixedly installed on the outer wall of the first rotating shaft (24). A transmission belt (26) is sleeved between the two sets of pulleys (25). A first connecting plate (29) is fixedly installed at one end of one set of first rotating shafts (24). One end of the first connecting plate (29) is fixedly connected to the outer wall of the connecting block (36).

2. The defect detection device for the outer wall of a long-distance oil and gas pipeline according to claim 1, characterized in that, The second adjustment unit also includes a servo motor (23) fixedly installed on the outer wall of one side of the fourth fixed plate (22). The output shaft of the servo motor (23) is fixedly connected to one end of another set of first rotating shafts (24) through a coupling.

3. The apparatus for detecting defects in the outer wall of a long oil and gas pipeline according to claim 1, characterized by, A second fixed frame plate (32) is fixedly installed on one side of the outer wall of the third arc plate (19). A first limiting groove (28) is opened inside the second fixed frame plate (32). A first snap-fit ​​block (27) is fixedly installed inside the first limiting groove (28). A second snap-fit ​​block (34) is fixedly installed at one end of the fourth arc plate (20). A snap-fit ​​groove (33) is opened on the second snap-fit ​​block (34). The first snap-fit ​​block (27) is snap-fitted into the inside of the snap-fit ​​groove (33).

4. The apparatus for detecting defects in the outer wall of a long oil and gas pipeline according to claim 1, characterized by, A second arc plate (11) is provided on the outside of the first arc plate (10). A set of first laser scanning plates (12) is provided at the bottom of both the first arc plate (10) and the second arc plate (11). Three sets of first fixed frame plates (13) are fixedly installed between the first arc plate (10) and the second arc plate (11). A first fixed plate (14) is fixedly installed inside the first fixed frame plate (13). Three sets of fixed pulleys (15) are provided inside the first fixed frame plate (13). A set of damping spring rods (16) is fixedly installed between each set of fixed pulleys (15) and one side outer wall of the first fixed plate (14). There are a total of nine sets of damping spring rods (16).

5. The apparatus for detecting defects in the outer wall of a long oil and gas pipeline according to claim 4, characterized in that, Two sets of second fixing plates (17) are fixedly installed between the three sets of first fixing frame plates (13). An infrared thermal imager scanning plate (18) is provided at the bottom of the second fixing plate (17). A fifth fixing plate (30) is fixedly installed on one side of the outer wall of the second arc plate (11). An electrical control box (31) is fixedly installed on one side of the outer wall of the fifth fixing plate (30).

6. The apparatus for detecting defects in the outer wall of a long oil and gas pipeline according to claim 1, characterized by, A second laser scanning plate (35) is provided on one side of the outer wall of the fourth arc-shaped plate (20).

7. The apparatus for detecting defects in the outer wall of a long oil and gas pipeline according to claim 4, characterized by, The first laser scanning plate (12), the infrared thermal imager scanning plate (18), the second laser scanning plate (35) and the electric control box (31) are electrically connected.

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