Device for detecting defects on inner surface of pressure pipeline

Abstract

The utility model relates to the technical field of pipeline detection, in particular to a pressure pipeline inner surface defect detection device which comprises a moving trolley, a detection head used for conducting defect detection on the inner surface of a pipeline is arranged on the moving trolley, and a fixing frame is installed on one side of the moving trolley through a connecting rod. The rotating shaft is rotationally installed on the upper portion of the fixing frame, the rotating shaft is connected with the rotating disc through the rotating shaft, the cleaning brushes are evenly arranged on the circumferential outer wall of the rotating disc at intervals, the cleaning brushes are in contact fit with the inner wall of the pipeline, and when the moving trolley moves in an inner cavity of the pipeline, the cleaning brushes movably clean the inner wall of the pipeline. Along with the movement of the moving trolley, the motor drives the rotating disc to rotate through the rotating rod and the gear set, and the cleaning brush on the rotating disc moves relative to the inner wall of the pipeline, so that dirt, rust and other sundries on the inner wall of the pipeline are effectively removed, and the accuracy of subsequent detection work is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline detection technical field, concretely relates to a pressure pipeline inner surface defect detection device. BACKGROUND

[0002] The pressure pipeline inner surface defect detection device is a kind of equipment specially designed to check whether there is defect such as corrosion, crack, deformation etc. in the inside of pipeline. This kind of device is crucial to ensure the safety and reliability of pipeline system, especially in the industries such as petroleum and natural gas, chemical industry, electric power etc. In the industrial field, the safety and reliability of pressure pipeline system is crucial. These pipelines are used to transport high-temperature and high-pressure fluids, such as steam, gas or liquid, and are widely used in the industries such as petroleum and natural gas, chemical industry, electric power etc. However, over time, defects such as corrosion, crack, deformation etc. may occur in the inside of pipeline, which may lead to serious safety accidents if not discovered and repaired in time.

[0003] In the prior art, the defects on the inner surface of the pipeline are detected by the detection device moving along the inner wall of the pipeline. However, after the pipeline is used, there are residual dirt, rust or other debris on the inner wall of the pipeline. If the detection equipment is used directly without cleaning, the detection result will be affected by the residual dirt, rust or other debris, resulting in inaccurate detection result.

[0004] Therefore, it is necessary to design a pressure pipeline inner surface defect detection device with cleaning function to ensure the accuracy of the detection result. SUMMARY

[0005] The technical implementation scheme of the utility model is: a pressure pipeline inner surface defect detection device, comprising a mobile trolley, a detection head for detecting defects on the inner surface of the pipeline is arranged on the mobile trolley, a fixing frame is installed on one side of the mobile trolley through a connecting rod, a rotating shaft is rotatably installed on the upper part of the fixing frame and connected with a rotating disc through the rotating shaft, a plurality of cleaning brushes are uniformly arranged on the circumferential outer wall of the rotating disc, the cleaning brushes are in contact with the inner wall of the pipeline, and the cleaning brushes move and clean the inner wall of the pipeline when the mobile trolley moves in the inner cavity of the pipeline.

[0006] Optionally, a motor is installed on the mobile trolley, a rotating rod is connected to the output shaft of the motor, the rotating rod rotates through the fixing frame, and a gear set is arranged between the end of the rotating rod and the rotating shaft, so that the motor drives the rotating shaft and the rotating disc to rotate through the rotating rod and the gear set.

[0007] Optionally, one side of the connecting rod is provided with a second circular ring which is installed side by side through the connecting frame, and a roller is arranged on the circumferential outer wall of the second circular ring, and the roller is used for rolling along the inner wall of the pipeline.

[0008] Optionally, the mobile trolley is further provided with a first circular ring which is arranged close to the rotating disc through the connecting frame, an annular mounting frame is arranged on the first circular ring, and a search light is arranged on the annular mounting frame, and the search light is used for illuminating the inner cavity of the pipeline so as to facilitate the detection head to detect the defects of the inner surface of the pipeline.

[0009] Optionally, a cross limiting frame is arranged on the second circular ring, and the cross limiting frame is used for fixing the detection head.

[0010] Optionally, a battery assembly, a driving assembly and a signal transceiver are arranged in the mobile trolley, and the detection head is electrically connected with a control unit arranged outside the pipeline through a connecting line.

[0011] The utility model has the advantages of: 1, along with the movement of mobile trolley, motor drives rotating disc to rotate through rotating lever and gear set, and the relative movement of the cleaning brush on the rotating disc and the inner wall of the pipeline effectively removes dirt, rust and other sundries on the inner wall of the pipeline, thereby ensuring the accuracy of subsequent detection work, reducing the false alarm rate, and prolonging the service life of the pipeline.

[0012] 2, the roller arranged on the second circular ring on the front side of the mobile trolley provides powerful guarantee for the stable running of the mobile trolley.

[0013] 3, the design of the cross limiting frame ensures that the detection head maintains a stable position during the whole detection process, avoids deviation due to vibration or other external force, and thereby guarantees the consistency and reliability of data acquisition. DRAWINGS

[0014] Figure 1 It is a three-dimensional structure schematic view of the utility model.

[0015] Figure 2 It is a three-dimensional structure schematic view of the mobile trolley, the first circular ring, the second circular ring and the detection head of the utility model.

[0016] Figure 3 It is a part of three-dimensional structure schematic view of the utility model.

[0017] Figure 4 It is a three-dimensional structure schematic view of the first circular ring, the annular mounting frame and the search light of the utility model.

[0018] Figure 5 It is a three-dimensional structure schematic view of the rotating disc and the cleaning brush of the utility model.

[0019] In the attached diagrams: 1: mobile trolley, 101: connecting frame, 2: first ring, 3: second ring, 31: cross limit frame, 4: roller, 5: detection head, 51: connecting line, 6: fixed frame, 60: rotating shaft, 61: motor, 7: turntable, 71: cleaning brush, 8: gear set, 9: ring mounting frame, 10: searchlight, 11: connecting rod, 12: rotating rod. Detailed Implementation

[0020] References to embodiments herein mean that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0021] Example: A device for detecting defects on the inner surface of a pressure pipeline, such as... Figures 1-5 As shown, the device includes a mobile trolley 1, which houses a battery assembly, a drive assembly, and a signal transceiver. The battery assembly provides power to the drive assembly, which moves the mobile trolley 1. The drive assembly includes a drive motor and drive wheels mounted on the bottom of the mobile trolley 1. The signal transceiver receives movement or stop signals from the control unit, thereby driving the mobile trolley 1 forward or backward via the drive assembly. The mobile trolley 1 is equipped with a detection head 5 for detecting defects on the inner surface of the pipe. The detection head 5 is electrically connected to a control unit located on the outside of the pipe via a connecting cable 51. Notably, the detection head 5 can be an ultrasonic probe, an eddy current probe, or other sensors suitable for detecting defects in metallic materials, capable of acquiring real-time data about the pipe surface. The data on the inner wall is analyzed by the built-in data acquisition and processing unit to check for defects such as corrosion and cracks. A fixed frame 6 is installed on the rear side of the mobile trolley 1 via a connecting rod 11. A rotating shaft 60 is rotatably installed on the upper part of the fixed frame 6 and a turntable 7 is connected to it. The diameter of the turntable 7 is smaller than the inner diameter of the pipe. Cleaning brushes 71 are evenly spaced on the circumferential outer wall of the turntable 7. The cleaning brushes 71 contact and cooperate with the inner wall of the pipe. When the mobile trolley 1 moves in the inner cavity of the pipe, the cleaning brushes 71 move and clean the inner wall of the pipe. Through the relative movement of the cleaning brushes 71 on the inner wall of the pipe, dirt, rust or other debris on the inner wall of the pipe are removed, thereby providing a strong guarantee for the detection of defects on the inner surface of the pipe, reducing the false alarm rate, and extending the service life of the pipe.

[0022] like Figure 3As shown, the mobile trolley 1 is provided with a motor 61, and the output shaft of the motor 61 is connected with a rotating rod 12, the rotating rod 12 rotates through the fixing frame 6 and the end thereof is provided with a gear set 8 between the rotating shaft 60, the gear set 8 includes a gear installed at the end of the rotating rod 12 and a gear installed on the rotating shaft and engaged with the gear, the gear set 8 and the rotating rod 12 jointly constitute a power transmission assembly, the motor 61 drives the rotating shaft 60 and the rotating disc 7 to rotate through the rotating rod 12 and the gear set 8, so as to realize the cleaning effect of the cleaning brush 71 on the inner wall of the pipeline.

[0023] As shown in Figure 2 The mobile trolley 1 is provided with a second circular ring 3 which is installed side by side through the connecting frame 101, the circumferential outer wall of the second circular ring 3 is provided with a roller 4, the roller 4 is used for rolling along the inner wall of the pipeline, the setting of the second circular ring 3 and the roller 4 helps to keep the stability of the movement of the mobile trolley 1, at the same time, the setting of the second circular ring 3 and the roller 4 effectively avoids the defect that the head is heavy and the foot is light, the second circular ring 3 is provided with a cross limiting frame 31, the cross limiting frame 31 is used for fixing the detection head 5, the setting of the cross limiting frame 31 helps to ensure that the detection head 5 keeps stable position during the whole detection process, avoids deviation due to vibration or other external force, so as to ensure the consistency and reliability of data acquisition.

[0024] As shown in Figure 1 And Figure 4 The mobile trolley 1 is further provided with a first circular ring 2 through the connecting frame 101, the first circular ring 2 is arranged near the rotating disc 7, the first circular ring 2 is provided with an annular mounting frame 9, the annular mounting frame 9 is provided with a searchlight 10, the searchlight 10 is used for illuminating the inner cavity of the pipeline to facilitate the defect detection of the inner surface of the pipeline by the detection head 5, the setting of the searchlight 10 provides sufficient illumination conditions for the detection head 5, so that the detection process is more clear and visible, which not only improves the accuracy of detection, but also allows the task to be performed under more extensive conditions, including insufficient light or completely dark environment.

[0025] Before starting detection, the operator places the mobile trolley 1 at the inlet of the pressure pipeline to be detected, and ensures that all components (such as the detection head 5, the cleaning brush 71, the roller 4, etc.) are in the correct position; at the same time, the power supply and the control system are checked and connected, and the system is started after being ready. The mobile trolley 1 is driven by electricity to advance or retreat along the pipeline axis, and as the mobile trolley 1 moves in the pipeline, the cleaning brush 71 installed on the rotating disc 7 will be in contact with the inner wall of the pipeline, the motor 61 drives the rotating shaft 60 to rotate through the transmission of the rotating rod 12 and the gear set 8, and then drives the rotating disc 7 and the cleaning brush 71 thereon to rotate, the rotating movement of the cleaning brush 71 effectively removes the dirt, rust or other sundries on the inner wall of the pipeline, providing a clean working environment for the subsequent detection; at the same time, as the mobile trolley 1 advances, the detection head 5 continuously scans the pipeline inner wall region passed thereby, and as the cleaning brush 71 effectively removes the dirt, rust or other sundries on the inner wall of the pipeline, the detection head 5 achieves the effect of efficiently and accurately detecting the defects of the inner wall of the pipeline.

[0026] Although the present application has been described in detail with reference to the above embodiments, it is apparent to those skilled in the art, through the disclosure, that various changes or modifications can be made to the present application without departing from the principles and spirit of the present application defined in the claims. Therefore, the detailed description of the present application is only used to explain, but not to limit the present application, and the protection scope is defined by the content of the claims.

Claims

1. A pressure pipeline inner surface defect detection device, comprising a mobile trolley (1) and a detection head (5) disposed on the mobile trolley (1) for detecting defects on the inner surface of the pipeline, characterized in that: A fixed frame (6) is installed on one side of the mobile trolley (1) via a connecting rod (11). A rotating shaft (60) is rotatably installed on the upper part of the fixed frame (6) and a turntable (7) is connected through the rotating shaft (60). Cleaning brushes (71) are evenly spaced on the circumferential outer wall of the turntable (7). The cleaning brushes (71) contact and cooperate with the inner wall of the pipe. When the mobile trolley (1) moves in the inner cavity of the pipe, the cleaning brushes (71) move and clean the inner wall of the pipe.

2. The pressure pipeline inner surface defect detection device according to claim 1, characterized in that: The mobile trolley (1) is equipped with a motor (61), and a rotating rod (12) is connected to the output shaft of the motor (61). The rotating rod (12) rotates through the fixed frame (6), and a gear set (8) is provided between its end and the rotating shaft (60). The motor (61) drives the rotating shaft (60) and the turntable (7) to rotate after being transmitted through the rotating rod (12) and the gear set (8).

3. A pressure pipeline inner surface defect detection device according to claim 2, characterized in that: The mobile trolley (1) has a second ring (3) mounted side by side on one side of the connecting rod (11) via a connecting frame (101). A roller (4) is provided on the circumferential outer wall of the second ring (3), and the roller (4) is used to roll along the inner wall of the pipe.

4. A pressure pipeline inner surface defect detection device according to claim 3, characterized in that: The mobile trolley (1) is also equipped with a first ring (2) via the connecting frame (101). The first ring (2) is located near the turntable (7). An annular mounting frame (9) is installed on the first ring (2). A searchlight (10) is installed on the annular mounting frame (9). The searchlight (10) is used to illuminate the inner cavity of the pipe so that the detection head (5) can detect defects on the inner surface of the pipe.

5. A pressure pipeline inner surface defect detection device according to claim 4, characterized in that: The second ring (3) is provided with a cross-shaped limiting frame (31), which is used to fix the detection head (5).

6. A pressure pipeline inner surface defect detection device according to claim 5, characterized in that: The mobile trolley (1) is equipped with a battery assembly, a drive assembly and a signal transceiver. The detection head (5) is electrically connected to the control unit located on the outside of the pipeline via a connecting line (51).

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