Device for detecting internal defects of pipeline
By incorporating shock-absorbing components and a multi-angle adjustment mechanism, the problem of unstable support in curved or sloping pipes has been solved, enabling stable and accurate detection in pipes of different diameters and shapes, thus improving the applicability and reliability of the device.
Patent Information
- Application Number
- CN202520026148.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-01-07
AI Technical Summary
Existing devices for detecting internal defects in pipelines are not stably supported in curved or sloping pipelines, which prevents the detection probe from making good contact with the inner wall, affecting detection accuracy. They are also easily damaged, limiting their applicability and making it difficult to adapt to different pipe diameters and irregularly shaped pipelines.
The device employs shock-absorbing components and a multi-angle adjustment mechanism, including a support plate, telescopic rod, probe, motor-driven rotating plate, and synchronous belt, to achieve adaptive support and multi-angle detection, ensuring the stability and flexibility of the device on the inner wall of the pipeline.
It improves the stability and accuracy of the detection device in pipes of different diameters and shapes, enhances the ability to detect minute defects, reduces the risk of equipment damage, and expands the scope of application.
Smart Images
Figure CN223794897U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pipeline defect detection technology, and in particular to a device for detecting internal defects in pipelines. Background Technology
[0002] A pipeline is a long, narrow device used to transport fluids. Typically made of materials such as metal and plastic, it has a closed channel structure and can safely and efficiently transport substances in various environments as needed. Pipelines play a crucial role in transporting various substances in numerous fields, from the transmission of energy sources like oil and natural gas to the operation of municipal engineering projects such as water supply and drainage. Detecting internal defects is extremely important because these defects can lead to pipeline leaks, causing energy waste, environmental pollution, and even accidents such as explosions and fires that endanger life and property, disrupting normal production and daily life, and affecting social stability. Therefore, detection is essential to ensure its safe and stable operation.
[0003] Existing devices for detecting internal defects in pipelines typically consist of multiple structures. They generally include detection probes, which come in various types, such as ultrasonic probes that use the principle of sound wave reflection to detect pipe wall thickness and internal damage; and magnetic particle detection probes, suitable for ferromagnetic pipes, which can display the location of defects by the accumulation of magnetic particles. In addition, there are crawlers used to propel the probes within the pipeline, which can be wheeled, tracked, etc., to adapt to different pipe diameters and pipeline environments. Simultaneously, a data acquisition and transmission system is provided to collect the signals detected by the probes and transmit them to external equipment, facilitating analysis and processing by personnel to accurately determine the condition of internal pipeline defects.
[0004] The use of tracked crawlers to support the inner wall of pipe internal defect detection devices presents several problems. Firstly, detection accuracy is reduced. In curved or sloping pipes, the lack of support leads to instability, preventing the probe from making proper contact with the inner wall. This affects the reception of ultrasonic and magnetic particle detection signals, making it difficult to accurately detect minute defects. Secondly, the risk of equipment damage increases. During movement, the device is prone to collisions with the inner wall, especially in small-diameter or complex pipes, which can damage precision components such as the probe. For example, collisions can alter the magnetic circuit structure of magnetic particle probes, affecting usability and increasing maintenance costs. Thirdly, the applicability is limited, making it difficult to adapt to pipes of different diameters, and it is particularly ineffective for detecting irregularly shaped pipes. Therefore, a new device for detecting internal pipe defects is proposed to address these issues. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides a device for detecting internal defects in pipelines, which aims to improve the problem that in the prior art, when using a tracked device to adapt to the inner wall of the pipeline, the detection probe cannot make good contact with the inner wall due to unstable support in curved or sloping pipelines.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A device for detecting internal defects in a pipeline includes a hollow plate, a first fixed column fixedly connected to the top of the hollow plate, and a shock-absorbing component provided on the outer wall of the first fixed column.
[0008] The shock-absorbing component includes a connecting block, the side wall of which is fixedly connected to the outer wall of the first fixed column, a telescopic rod fixedly connected to the side wall of the connecting block, a connecting column fixedly connected to the side wall of the connecting block, a first support plate provided at one end of the connecting column, a support disk fixedly connected to the side wall of the first support plate, a probe fixedly connected to the side wall of the connecting block, and multiple shock-absorbing components provided on the outer wall of the first fixed column for stable support inside the pipe. A movable component is provided inside the hollow plate.
[0009] As a further description of the above technical solution:
[0010] The moving component includes a hollow block, the bottom of which is fixedly connected to the inside of a hollow plate. A first motor is fixedly connected inside the hollow block, and a first rotating wheel is fixedly connected to the output end of the first motor. A second rotating wheel is rotatably connected inside the hollow block.
[0011] As a further description of the above technical solution:
[0012] A connecting plate is fixedly connected to the top of the first fixed column, a second motor is fixedly connected to the side wall of the connecting plate, and a first rotating plate is fixedly connected to the output end of the second motor;
[0013] As a further description of the above technical solution:
[0014] A third motor is fixedly connected to the side wall of the connecting plate, and a second rotating plate is fixedly connected to the output end of the third motor;
[0015] As a further description of the above technical solution:
[0016] A connecting ball is fixedly connected to the top of the connecting plate. The outer wall of the connecting ball is rotatably connected to the inner wall of the second rotating plate, and the outer wall of the connecting ball is rotatably connected to the inside of the first rotating plate.
[0017] As a further description of the above technical solution:
[0018] One end of the connecting ball is fixedly connected to a second fixing column, and one end of the second fixing column is fixedly connected to a second support plate;
[0019] As a further description of the above technical solution:
[0020] The second rotating wheel is rotatably connected to the first rotating wheel by a synchronous belt. A movable wheel is rotatably connected to the inner wall of the hollow block. A third rotating wheel is fixedly connected to one end of the movable wheel. Another synchronous belt is rotatably connected to the outer wall of the third rotating wheel and the second rotating wheel.
[0021] This utility model has the following beneficial effects:
[0022] In this invention, a support plate is attached to the inner wall of the pipe. Furthermore, the support plate, under force, drives the first support plate to retract the telescopic rod on the side wall, achieving the effect of adaptively supporting the inner wall of the pipe. This solves the problem that the device cannot adaptively support the inner wall of the pipe, thus preventing detection inside various pipes, and improves the versatility of the device for detecting defects inside pipes.
[0023] In this invention, the output end of the second motor drives the first rotating plate to rotate, and the output end of the third motor drives the second rotating plate to rotate. The rotation of the second rotating plate and the first rotating plate causes the connecting ball on the inner wall to rotate, achieving the effect of multi-angle detection. This solves the problem that the inability to detect pipes from multiple angles leads to inaccurate detection of the inside of the pipe, and improves the practicality of the device for detecting defects inside pipes. Attached Figure Description
[0024] Figure 1 This is a three-dimensional schematic diagram of a device for detecting internal defects in a pipeline according to the present invention.
[0025] Figure 2 This is a schematic diagram of the internal structure of a hollow plate for a device for detecting internal defects in a pipeline, as proposed in this utility model.
[0026] Figure 3 This is a schematic diagram of the outer wall structure of the first fixed column of a device for detecting internal defects in a pipeline proposed in this utility model;
[0027] Figure 4 This is a schematic diagram of the inner wall structure of the connecting plate of a device for detecting internal defects in a pipeline, as proposed in this utility model.
[0028] Legend:
[0029] 1. Hollow plate; 2. First support plate; 3. Connecting plate; 4. First fixed column; 5. Hollow block; 6. First motor; 7. First rotating wheel; 8. Synchronous belt; 9. Second rotating wheel; 10. Third rotating wheel; 11. Moving wheel; 12. Connecting block; 13. Telescopic rod; 14. Probe; 15. Support plate; 16. Connecting column; 17. Second motor; 18. Third motor; 19. First rotating plate; 20. Second rotating plate; 21. Connecting ball; 22. Second fixed column; 23. Second support plate. Detailed Implementation
[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0031] Reference Figure 1 and Figure 3 This utility model provides an embodiment of a device for detecting internal defects in pipelines, comprising a hollow plate 1. The hollow plate 1 can be made of high-strength aluminum alloy, which is lightweight yet possesses good strength and rigidity, ensuring structural stability while reducing overall weight and facilitating installation and operation. A first fixing column 4 is fixedly connected to the top of the hollow plate 1. The first fixing column 4 can be made of stainless steel, which has corrosion resistance and high strength, effectively supporting the upper structure and adapting to complex environments. A shock-absorbing component is provided on the outer wall of the first fixing column 4.
[0032] The shock-absorbing component includes a connecting block 12, which can be made of engineering plastic, such as nylon, possessing a certain degree of toughness and wear resistance, and can buffer some of the impact force when connecting various components. The sidewall of the connecting block 12 is fixedly connected to the outer wall of the first fixed column 4. A telescopic rod 13 is also fixedly connected to the sidewall of the connecting block 12. The rod body of the telescopic rod 13 can be made of aluminum alloy, and the outer tube can be made of carbon fiber. This combination ensures both smooth extension and contraction and enhances structural strength. A connecting column 16 is fixedly connected to the sidewall of the connecting block 12. The connecting column 16 can be made of carbon steel and treated with rust prevention. A first support plate 2 is provided at one end of the connecting column 16. The first support plate 2 can be made of a rubber and metal composite material. The rubber layer effectively buffers vibration, while the metal base layer ensures structural strength. A support plate 15 is fixedly connected to the sidewall of the first support plate 2. The support plate 15 can be made of polyurethane, possessing good elasticity and wear resistance. A probe 14 is fixedly connected to the sidewall of the connecting block 12. The probe 14 can be made of hard alloy, such as tungsten steel, to ensure detection accuracy and durability. The outer wall of the first fixed column 4 is provided with multiple shock-absorbing components for stable support inside the pipeline. The materials of each component of the shock-absorbing components are as described above. They work together to effectively cope with the complex environment inside the pipeline and ensure the stability and reliability of the detection device during operation. The hollow plate 1 is provided with a moving component.
[0033] Specifically, once the detection device enters the pipeline, the support plate 15 begins to play a crucial role. The support plate 15 is initially subjected to force and begins to move under the influence of this force. This movement causes a corresponding displacement in the first support plate 2 connected to it. During the movement of the first support plate 2, the telescopic rods 13 on its sidewalls are adjusted by this displacement. These telescopic rods 13 are securely connected by connecting blocks 12, ensuring they work together during extension and retraction. Simultaneously, the first support plate 2 further strengthens its overall structural integrity and stability with the help of connecting columns 16. Through this series of linkages and adjustments, the device successfully achieves the effect of adaptively supporting the inner wall of the pipeline, enabling the detection device to maintain a stable working state in pipelines of different diameters and shapes, effectively improving the accuracy and reliability of the detection.
[0034] Reference Figure 1 and Figure 4 A connecting plate 3 is fixedly connected to the top of the first fixed column 4. The connecting plate 3 can be made of aluminum alloy, which is lightweight, high-strength, and has good processing performance, making it easy to connect and fix with other components. A second motor 17 is fixedly connected to the side wall of the connecting plate 3. The housing of the second motor 17 is made of cast aluminum, which has good heat dissipation performance and is sturdy and durable. The output end of the second motor 17 is fixedly connected to a first rotating plate 19, which can be made of stainless steel, capable of withstanding large torque and not easily deformed. A third motor 18 is fixedly connected to the side wall of the connecting plate 3. The third motor 18 is made of the same material as the second motor 17. The output end of the third motor 18 is fixedly connected to a second rotating plate 20. A connecting ball 21 is fixedly connected to the top of the connecting plate 3. The connecting ball 21 can be made of high-strength alloy steel, and its surface is finely polished to ensure smoothness and wear resistance when rotating and connecting with the inner wall of the second rotating plate 20 and the inside of the first rotating plate 19. The outer wall of the connecting ball 21 is rotatably connected to the inner wall of the second rotating plate 20, and the outer wall of the connecting ball 21 is rotatably connected to the inside of the first rotating plate 19. One end of the connecting ball 21 is fixedly connected to a second fixing column 22. The second fixing column 22 can be made of carbon steel and undergo heat treatment to enhance its comprehensive mechanical properties. One end of the second fixing column 22 is fixedly connected to a second support plate 23.
[0035] Specifically, during pipeline internal defect detection, relevant mechanical structures work in concert to achieve multi-angle detection. First, the second motor 17 starts, and its output power drives the first rotating plate 19 to rotate around a specific axis. Simultaneously, the third motor 18 also starts working, its output driving the second rotating plate 20 to rotate. During rotation, the first rotating plate 19 pushes the second fixed column 22 connected to its inner wall, causing it to move accordingly. The rotation of the second rotating plate 20 also exerts a force on the second fixed column 22 on its inner wall, causing it to move. The connecting ball 21, as a key connecting component, achieves a stable connection through the second fixed column 22, and when the second fixed column 22 rotates, it drives the second support plate 23 at the top, causing it to rotate around the connection point. Through this complex and orderly mechanical linkage, the detection device successfully achieves multi-angle adjustment and detection within the pipeline, greatly improving the detection capability for defects in different locations and directions within the pipeline, ensuring the comprehensive and accurate discovery of various potential problems.
[0036] Reference Figure 1 and Figure 2The moving component includes a hollow block 5, which is preferably made of high-strength engineering plastic, characterized by its light weight, high strength, wear resistance, and chemical corrosion resistance. A first motor 6 is fixedly connected inside the hollow block 5. The housing of the first motor 6 is made of aluminum alloy, a material with excellent heat dissipation properties, effectively preventing the motor from overheating during prolonged operation and ensuring stable motor operation. The core component inside the motor, the output end of the first motor 6, is firmly connected to a first rotating wheel 7. The first rotating wheel 7 can adopt a composite structure of rubber-wrapped metal hub. The rubber outer layer is soft and has high friction, allowing it to tightly fit the synchronous belt 8, ensuring effective power transmission while reducing noise and vibration during rotation. The metal hub provides solid structural support for the entire rotating wheel, ensuring it does not deform during high-speed rotation. A second rotating wheel 9 is also rotatably connected inside the hollow block 5. The second rotating wheel 9 is made of a similar material to the first rotating wheel 7, and the two are rotatably connected via the synchronous belt 8. The synchronous belt 8 is recommended to be made of polyurethane, which has excellent wear resistance, oil resistance, and aging resistance. The inner wall of the hollow block 5 is rotatably connected to the moving wheel 11. One end of the moving wheel 11 is fixedly connected to the third rotating wheel 10. The moving wheel 11 can be made of rubber, whose elasticity can adapt well to various uneven conditions of the inner wall of the pipe. During movement, it can provide sufficient friction to propel the entire device forward while effectively avoiding scratch damage to the inner wall of the pipe. The material of the third rotating wheel 10 is similar to that of the first rotating wheel 7. It is rotatably connected to the outer wall of the second rotating wheel 9 through another synchronous belt 8. This structural design allows the first motor 6 to drive a series of rotating wheels and the synchronous belt 8 to work together after starting, thereby effectively transmitting power to the moving wheel 11 and ultimately achieving smooth movement of the entire detection device inside the pipe.
[0037] Specifically, the first step in activating the operating mechanism is crucial when using a device to detect internal pipeline defects. First, the first motor 6 starts working, generating powerful output that drives the first rotating wheel 7 to rotate around its axis. During rotation, the friction between the first rotating wheel 7 and the timing belt 8, which is tightly fitted to the outer wall, powerfully propels the timing belt 8, causing it to rotate along a predetermined trajectory. The rotation of the timing belt 8 then transmits power to the second rotating wheel 9 on the inner wall, causing it to rotate as well. Simultaneously, the rotation of the second rotating wheel 9, through its interaction with another timing belt 8, drives that belt to rotate, which in turn drives the third rotating wheel 10 located on the inner wall of the timing belt 8, causing it to rotate as well. Finally, the rotation of the third rotating wheel 10 drives the movable wheel 11 connected to it, causing it to rotate and roll along the inner wall of the pipeline, ultimately achieving smooth movement within the pipeline and laying a solid foundation for the subsequent accurate detection of internal pipeline defects.
[0038] Working Principle: When using the device for detecting internal defects in pipelines, the output of the first motor 6 drives the first rotating wheel 7 to rotate. The rotation of the first rotating wheel 7 drives the synchronous belt 8 on the outer wall to rotate. The rotation of the synchronous belt 8 drives the second rotating wheel 9 on the inner wall to rotate. At the same time, the rotation of the second rotating wheel 9 drives another synchronous belt 8 on the outer wall to rotate, which in turn drives the third rotating wheel 10 on the inner wall of the synchronous belt 8 to rotate. Then, the rotation of the third rotating wheel 10 drives the moving wheel 11 at one end to rotate, achieving the effect of moving inside the pipeline. Then, the support plate 15 is driven by force, which drives the first support plate 2 to move. The movement of the first support plate 2 drives the telescopic rod 13 on the side wall. The telescopic rod 13 is then connected via the connecting block 12, and the first support plate 2 is connected via the connecting column 16, achieving the effect of adaptive support for the inner wall of the pipe. Next, the output end of the second motor 17 drives the first rotating plate 19 to rotate, and then the output end of the third motor 18 drives the second rotating plate 20 to rotate. In addition, the rotation of the first rotating plate 19 moves the second fixed column 22 on the inner wall, and the rotation of the second rotating plate 20 also moves the second fixed column 22 on the inner wall. Furthermore, the connecting ball 21 is connected via the second fixed column 22, and when the second fixed column 22 rotates, it drives the second support plate 23 at the top to rotate, achieving the effect of multi-angle adjustment and detection.
[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A device for detecting internal defects in a pipeline, comprising a hollow plate (1), characterized in that: The top of the hollow plate (1) is fixedly connected to a first fixed column (4), and the outer wall of the first fixed column (4) is provided with a shock-absorbing component; The shock-absorbing component includes a connecting block (12), the side wall of which is fixedly connected to the outer wall of the first fixed column (4), a telescopic rod (13) is fixedly connected to the side wall of the connecting block (12), a connecting column (16) is fixedly connected to the side wall of the connecting block (12), a first support plate (2) is provided at one end of the connecting column (16), a support plate (15) is fixedly connected to the side wall of the first support plate (2), a probe (14) is fixedly connected to the side wall of the connecting block (12), and multiple shock-absorbing components are provided on the outer wall of the first fixed column (4) for stable support inside the pipe. A moving component is provided inside the hollow plate (1).
2. The device for detecting internal defects in a pipeline according to claim 1, characterized in that: The moving component includes a hollow block (5), the bottom of which is fixedly connected to the inside of a hollow plate (1). A first motor (6) is fixedly connected inside the hollow block (5), and a first rotating wheel (7) is fixedly connected to the output end of the first motor (6). A second rotating wheel (9) is rotatably connected inside the hollow block (5).
3. The device for detecting internal defects in a pipeline according to claim 1, characterized in that: The top of the first fixed column (4) is fixedly connected to a connecting plate (3), the side wall of the connecting plate (3) is fixedly connected to a second motor (17), and the output end of the second motor (17) is fixedly connected to a first rotating plate (19).
4. The device for detecting internal defects in a pipeline according to claim 3, characterized in that: The third motor (18) is fixedly connected to the side wall of the connecting plate (3), and the output end of the third motor (18) is fixedly connected to the second rotating plate (20).
5. The device for detecting internal defects in a pipeline according to claim 4, characterized in that: The top of the connecting plate (3) is fixedly connected to a connecting ball (21), the outer wall of the connecting ball (21) is rotatably connected to the inner wall of the second rotating plate (20), and the outer wall of the connecting ball (21) is rotatably connected to the inside of the first rotating plate (19).
6. The device for detecting internal defects in a pipeline according to claim 5, characterized in that: One end of the connecting ball (21) is fixedly connected to a second fixed column (22), and one end of the second fixed column (22) is fixedly connected to a second support plate (23).
7. The device for detecting internal defects in a pipeline according to claim 2, characterized in that: The second rotating wheel (9) is rotatably connected to the first rotating wheel (7) by a synchronous belt (8). The inner wall of the hollow block (5) is rotatably connected to a movable wheel (11). One end of the movable wheel (11) is fixedly connected to a third rotating wheel (10). The third rotating wheel (10) is rotatably connected to the outer wall of the second rotating wheel (9) by another synchronous belt (8).