Automatic pipeline inspection device

Abstract

The invention discloses an automatic pipeline inspection device, which comprises an inspection main body, a signal amplification processor and a sensor group, and is characterized in that the sensor group is fixed on the inspection main body, penetrates through the inspection main body and can be in contact with the surface of a pipeline; the device further comprises an advancing assembly and a rotating assembly. The advancing assembly and the rotating assembly are connected to one end of the inspection body through a connecting plate and a fixing frame. The connecting plate and the fixing frames are fixedly connected with each other, the middle of each fixing frame is hollowed out, and an advancing assembly and a rotating assembly are arranged at the hollowed-out position; according to the device, advancing and rotating are separated, so that advancing and rotating instructions are more accurate; due to the action of a limiting bead, resistance exists in rotation of an auxiliary wheel, the problem that the device inclines when moving forwards can be solved, when a second motor drives a rotating wheel to rotate, the auxiliary wheel is superior to the resistance to achieve rotation and drive a main body to rotate, and therefore the device is stable when moving forwards or rotating, and deviation does not occur.

Description

Technical Field

[0001] This invention relates to the field of pipeline wall corrosion detection technology, specifically to an automatic pipeline inspection device. Background Technology

[0002] Pipeline corrosion inspection refers to pipeline inspection aimed at detecting metal loss such as corrosion of the pipe wall. It is a fundamental method used to understand the damage suffered by in-service pipelines in the working environment, ensuring that defects and damage are detected before serious problems occur.

[0003] Current automatic inspection devices are not stable when traveling on pipelines, causing the inspection mechanism to shake or twist during inspection, resulting in inaccurate results. Therefore, an automatic pipeline inspection device is needed to solve these problems. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic pipeline inspection device to solve the problems in the background art, such as poor stability of the automatic inspection device when traveling on the pipeline, which causes the detection mechanism to shake or the travel path to twist during detection, resulting in detection distortion.

[0005] To achieve the above objectives, the present invention provides the following technical solution: an automatic pipeline inspection device, comprising an inspection body, a signal amplification processor, and a sensor group. The signal amplification processor is mounted on the outer surface of the inspection body, and the sensor group is fixed on the inspection body and can penetrate the inspection body to contact the surface of the pipeline. It also includes a forward advancing component and a rotating component, both of which are connected to one end of the inspection body via a connecting plate and a fixing frame. The connecting plate and the fixing frame are fixedly connected to each other. Each fixing frame has a hollowed-out section in the middle, and the forward advancing component and the rotating component are respectively provided in the hollowed-out section.

[0006] Preferably, the forward propulsion assembly includes a forward wheel and a first motor. The forward wheel is rotatably connected to the hollowed-out portion of the fixed frame via a first rotating shaft. The first motor is fixedly mounted on the fixed frame. A second gear is connected to the first rotating shaft, and a first gear is connected to the output end of the first motor. The first gear and the second gear mesh with each other. An auxiliary wheel is provided on the surface of the forward wheel.

[0007] Preferably, the auxiliary wheels are evenly distributed on the forward wheels and are rotatably connected to the surface of the forward wheels, and the rotation direction of the auxiliary wheels is the same as that of the forward wheels.

[0008] Preferably, the auxiliary wheel is connected to the forward wheel via a third rotating shaft; the third rotating shaft is fixed on the forward wheel and rotatably connected to the auxiliary wheel; the third rotating shaft is provided with a limiting bead for increasing friction.

[0009] Preferably, the rotating assembly includes a rotating wheel and a second motor. The rotating wheel is rotatably connected to the fixed frame via a second rotating shaft. The second motor is fixed to the connecting plate. A fourth gear is connected to the second rotating shaft. A third gear is provided on the output end of the second motor. The third gear and the fourth gear mesh with each other.

[0010] Preferably, the rotation direction of the rotating wheel differs from the rotation direction of the forward wheel by 90°.

[0011] Preferably, the sensors in the sensor group are a linear array.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] This device separates forward and rotational movements, making forward and rotational commands more accurate. Due to the limiting beads, the auxiliary wheel's rotation experiences resistance, preventing tilting during forward movement. When the second motor drives the rotating wheel, the auxiliary wheel overcomes the resistance to rotate, thus rotating the main body. Therefore, the device is stable during both forward and rotational movements, without deviation. The sensor array is fixed to the inspection body and penetrates it to contact the pipe surface. A response coil design is incorporated to reduce channel interference from multi-frequency electromagnetic fields. The sensors in the sensor array are electromagnetic sensors, arranged in a linear / two-dimensional array (for easy imaging). Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of an automatic pipeline inspection device proposed in this invention;

[0015] Figure 2 This is a three-dimensional structural diagram of the forward component in an automatic pipeline inspection device proposed in this invention.

[0016] Figure 3 This is a top view of the forward component in an automatic pipeline inspection device proposed in this invention.

[0017] Figure 4 for Figure 3 AA section view;

[0018] Figure 5 This is a schematic diagram of the rotating component in an automatic pipeline inspection device proposed in this invention;

[0019] Figure 6 This is a front view (partial sectional view) of the auxiliary wheel in an automatic pipeline inspection device proposed in this invention;

[0020] Figure 7 for Figure 6 A magnified view of section B.

[0021] In the diagram: 1. Inspection body; 2. Signal amplifier and processor; 3. Sensor group; 4. Connecting plate; 5. Fixing frame; 6. Forward wheel; 7. First motor; 8. First gear; 9. Second gear; 10. First shaft; 11. Auxiliary wheel; 12. Rotating wheel; 13. Second motor; 14. Third gear; 15. Second shaft; 16. Third shaft; 17. Limiting bead; 18. Fourth gear. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figure 1 To achieve high-resolution, automated, and multi-depth imaging detection of internal and surface defects in metal structures such as steel pipes, housings, and aluminum plates, an automatic pipeline inspection device is designed. The device includes an inspection body 1, a signal amplifier processor 2, and a sensor group 3. The signal amplifier processor 2 is mounted on the outer surface of the inspection body 1, and the sensor group 3 is fixed to the inspection body 1 and can penetrate the inspection body 1 to contact the surface of the pipeline. A response coil design is incorporated to reduce channel interference from multi-frequency electromagnetic fields. The sensors in the sensor group 3 are electromagnetic sensors, and are arranged in a linear / two-dimensional array (for easy imaging).

[0024] Please see Figure 1 , 2 To address the issue of poor stability when moving along pipelines, this device also includes a forward-moving component and a rotating component. Both components are connected to one end of the inspection body 1 via a connecting plate 4 and a fixed frame 5. The connecting plate 4 and the fixed frame 5 are fixedly connected to each other. Each fixed frame 5 has a hollowed-out section in the middle, where the forward-moving component and the rotating component are respectively located. This device separates the forward and rotating components, making the forward and rotating commands more accurate.

[0025] Please see Figure 2 and 3 To enable the device to move forward automatically, a forwarding assembly is provided, comprising a forward wheel 6 and a first motor 7. The first motor 7 is an existing motor model suitable for this device. The forward wheel 6 is rotatably connected to the hollowed-out portion in the middle of the fixed frame 5 via a first rotating shaft 10. The first motor 7 is fixedly mounted on the fixed frame 5. A second gear 9 is connected to the first rotating shaft 10, and a first gear 8 is connected to the output end of the first motor 7. The first gear 8 and the second gear 9 mesh with each other. Please refer to [link / reference]. Figure 5The rotating assembly includes a rotating wheel 12 and a second motor 13. The second motor 13 is an existing motor suitable for this device. The rotating wheel 12 is rotatably connected to the fixed frame 5 via a second rotating shaft 15. The second motor 13 is fixed to the connecting plate 4. A fourth gear 18 is connected to the second rotating shaft 15. A third gear 14 is provided on the output end of the second motor 13, and the third gear 14 meshes with the fourth gear 18. The rotation direction of the rotating wheel 12 is 90° different from the rotation direction of the forward wheel 6.

[0026] Please see Figure 2 , 6 To ensure the stability of the device when moving forward on the pipeline, auxiliary wheels 11 are provided on the surface of the forward wheel 6. The surface of the auxiliary wheels 11 is made of soft rubber. The auxiliary wheels 11 are evenly distributed on the forward wheel 6 and are rotatably connected to the surface of the forward wheel 6. The rotation direction of the auxiliary wheels 11 is the same as that of the rotating wheel 12. The auxiliary wheels 11 are connected to the forward wheel 6 through a third rotating shaft 16. The third rotating shaft 16 is fixed on the forward wheel 6 and rotatably connected to the auxiliary wheels 11. The third rotating shaft 16 is provided with a limiting bead 17 to increase friction. Due to the function of the limiting bead 17, the rotation of the auxiliary wheels 11 has resistance, which can prevent the device from tilting when moving forward. When the second motor 13 drives the rotating wheel 12 to rotate, the auxiliary wheels 11 overcome the resistance and rotate, driving the main body 1 to rotate. Therefore, the device is stable when moving forward or rotating and will not deviate.

[0027] The working principle is as follows: First, the main body 1 of the device is placed on the pipe to be inspected. The first motor 7 is started, which drives the first gear 8 to rotate. When the first gear 8 rotates, the second gear 9 meshing with it rotates, which drives the first rotating shaft 10 to rotate. This drives the forward wheel 6 to rotate, thus achieving the forward movement. During forward movement, the auxiliary wheels 11, which are multiple and evenly distributed, contact the surface of the pipe being inspected. Due to the effect of the limiting bead 17, the rotation of the auxiliary wheels 11 is resisted, which prevents the device from tilting during forward movement. When rotation is required, the second motor 13 is started, which drives the third gear 14 on the output shaft. The third gear 14 drives the fourth gear 15 meshing with it. The fourth gear 15 drives the rotating wheel 12 to rotate through the second rotating shaft 15, thus achieving the movement of the inspection body 1. When the second motor 13 drives the rotating wheel 12 to rotate, the auxiliary wheel 11 overcomes the resistance and rotates.

[0028] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic pipeline inspection device, comprising an inspection body (1), a signal amplification processor (2), and a sensor group (3), wherein the signal amplification processor (2) is mounted on the outer surface of the inspection body (1), and the sensor group (3) is fixed on the inspection body (1) and penetrates the inspection body (1) to contact the surface of the pipeline; characterized in that: It also includes a forward component and a rotating component, both of which are connected to one end of the inspection body (1) via a connecting plate (4) and a fixed frame (5); the connecting plate (4) and the fixed frame (5) are fixedly connected to each other, and each fixed frame (5) is hollowed out in the middle, with a forward component and a rotating component respectively provided in the hollowed-out area.

2. The automatic pipeline inspection device according to claim 1, characterized in that: The forward propulsion assembly includes a forward wheel (6) and a first motor (7). The forward wheel (6) is rotatably connected to the hollowed-out part in the middle of the fixed frame (5) via a first rotating shaft (10). The first motor (7) is fixedly mounted on the fixed frame (5). A second gear (9) is connected to the first rotating shaft (10). A first gear (8) is connected to the output end of the first motor (7). The first gear (8) and the second gear (9) mesh with each other. An auxiliary wheel (11) is provided on the surface of the forward wheel (6).

3. The automatic pipeline inspection device according to claim 2, characterized in that: The auxiliary wheels (11) are evenly distributed on the forward wheels (6) and are rotatably connected to the surface of the forward wheels (6). The rotation direction of the auxiliary wheels (11) is the same as that of the rotating wheels (12).

4. The automatic pipeline inspection device according to claim 3, characterized in that: The auxiliary wheel (11) is connected to the forward wheel (6) via a third rotating shaft (16); the third rotating shaft (16) is fixed on the forward wheel (6) and rotatably connected to the auxiliary wheel (11); the third rotating shaft (16) is provided with a limiting bead (17) for increasing friction.

5. The automatic pipeline inspection device according to claim 1, characterized in that: The rotating assembly includes a rotating wheel (12) and a second motor (13). The rotating wheel (12) is rotatably connected to the fixed frame (5) via a second rotating shaft (15). The second motor (13) is fixed on the connecting plate (4). A fourth gear (18) is connected to the second rotating shaft (15). A third gear (14) is provided on the output end of the second motor (13). The third gear (14) meshes with the fourth gear (18).

6. The automatic pipeline inspection device according to claim 5, characterized in that: The rotation direction of the rotating wheel (12) is 90° different from the rotation direction of the forward wheel (6).

7. The automatic pipeline inspection device according to claim 1, characterized in that: The sensors in the sensor group (3) are a linear array.

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