Anti-impact magnetic flux leakage flaw detection device

Abstract

The utility model relates to the technical field of pipeline flaw detection, and discloses an anti-impact magnetic flux leakage flaw detection device which comprises a connecting rod I, a connecting rod II and a protective sleeve, and a connecting flange and a protective disc are fixedly mounted at one end, close to the connecting rod II, of the connecting rod I. According to the anti-impact magnetic flux leakage flaw detection device, the flexible first steel brush and the flexible second steel brush can effectively remove impurities, rust and the like on the surface of a workpiece on the premise that the surface of the detected workpiece is not damaged, good conditions are created for accurate flaw detection of the detection section, the steel brushes are arranged at the two ends of the detection section, the workpiece surface can be bi-directionally cleaned in the flaw detection process, and the detection efficiency is improved. The protective sleeve made of titanium alloy has the characteristics of high strength, low density, good corrosion resistance and the like, so that reliable protection can be provided for the internal detection probe, the detection probe is prevented from being damaged by external force such as impact and friction in the use process of the flaw detection device, the service life of the flaw detection device is prolonged, and the service life of the flaw detection device is prolonged. And normal work is prevented from being influenced.

Description

Technical Field

[0001] This utility model relates to the field of pipeline flaw detection technology, specifically an impact-resistant magnetic flux leakage flaw detection device. Background Technology

[0002] Underwater pipelines are mainly used to transport liquids, gases, or loose solids, and have high transport efficiency, making them an important mode of resource and material transportation. However, because underwater pipelines are submerged for long periods, they are subject to severe erosion from wind, waves, and water currents, making them prone to damage. To ensure the normal use of pipelines, it is necessary to detect and repair the damaged locations. Since the flaw detection device moves inside the pipeline, it needs to be protected to prevent collisions that could cause damage. Therefore, impact-resistant detection devices are required.

[0003] Chinese Utility Model Patent Publication No. CN215862927U discloses a flaw detection device for underwater pipelines in water conservancy projects. This flaw detection device has a high degree of automation, saving a lot of manpower and material resources, reducing the flaw detection cost of underwater pipelines, and avoiding repetitive operation by staff, thus reducing the labor intensity of staff. However, this flaw detection device for underwater pipelines in water conservancy projects does not have a probe protection component designed. When the probe is subjected to external forces such as impact or friction, the detection probe is damaged, resulting in a short service life of the flaw detection device and affecting its normal operation, thus resulting in poor practicality. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to provide an impact-resistant magnetic flux leakage flaw detection device, which can effectively solve the problems in the prior art.

[0005] The technical solution adopted by this utility model is: an impact-resistant magnetic flux leakage flaw detection device, including a connecting rod one, a connecting rod two, and a protective sleeve. A connecting flange and a protective plate are fixedly installed at the end of the connecting rod one near the connecting rod two. A connecting sleeve is fixedly installed at the other end of the protective plate away from the connecting rod one. A first steel brush, a detection section, a second steel brush, and the connecting rod two are sequentially fixedly installed at the other end of the connecting sleeve away from the connecting rod one. A tracking plate is fixedly installed at the outer ring of the tracking plate away from the center line. A detection probe is fixedly installed on the inner surface of the protective sleeve. A protective sleeve two with a diameter shorter than the diameter of the protective sleeve is fixedly installed at the end of the protective sleeve away from the center line.

[0006] Preferably, a limiting groove is provided on the outer ring of the tracking disk, and a protective sleeve is engaged with the tracking disk through the limiting groove. A positioning bolt extending into the interior of the tracking disk is provided through the outer ring of the protective sleeve.

[0007] Through the above technical solution, the limiting groove of the tracking disk can be easily installed onto the protective sleeve one, so that the protective sleeve one can be stably snapped onto the tracking disk. The setting of the positioning bolt further enhances the firmness of the connection between the protective sleeve one and the tracking disk, and can play a protective role.

[0008] Preferably, the positioning bolts are provided in two identical groups, each group having an identical number of positioning bolts distributed in a ring around the center line of the protective sleeve, and the two groups of positioning bolts are symmetrically distributed around the center line of the protective sleeve.

[0009] Through the above technical solution, two sets of positioning bolts arranged in a ring and symmetrically fixed the protective sleeve one from multiple angles, which not only enhances the connection strength between the protective sleeve one and the tracking disk, but also effectively resists the impact of external forces from different directions, and improves the stability of the protective sleeve one during flaw detection work.

[0010] Preferably, the first and second steel brushes are flexible steel brushes, and the first and second steel brushes are located at the two ends of the detection section, respectively. The protective sleeve is a titanium alloy protective sleeve.

[0011] Through the above technical solution, the flexible first and second steel brushes can effectively remove impurities, rust, and other contaminants from the surface of the workpiece without damaging it, creating favorable conditions for accurate flaw detection in the inspection section. Steel brushes are installed at both ends of the inspection section, allowing for bidirectional cleaning of the workpiece surface during flaw detection, improving cleaning efficiency and inspection accuracy. The titanium alloy protective sleeve, due to its high strength, low density, and excellent corrosion resistance, provides reliable protection for the internal inspection probe, preventing damage from impacts, friction, and other external forces during use, thus extending the service life of the flaw detection device.

[0012] Preferably, a tracking section is fixedly installed on the outer surface of the second connecting rod, and a connector is fixedly installed at the end of the protective sleeve near the first protective sleeve.

[0013] With the above technical solution, the tracking section is installed on the outer surface of the connecting rod, which can monitor the position and trajectory of the flaw detection device in the pipeline and other objects being inspected in real time, providing operators with accurate device operation information and facilitating the monitoring and adjustment of the flaw detection process.

[0014] Preferably, the protective sleeve has a slot at one end near the connector, and a locking block is fixedly installed on the inner surface of the second protective sleeve, the locking block being adapted to the slot.

[0015] Through the above technical solution, the slot on the protective sleeve is adapted to the locking block on the inner surface of the second protective sleeve, which facilitates the installation and removal of the second protective sleeve. When the second protective sleeve needs to be replaced due to wear or damage during the flaw detection process, the operator can quickly remove it for replacement, which improves the maintenance efficiency of the flaw detection device and reduces maintenance costs.

[0016] Preferably, an installation strip is fixedly installed at the end of the connector away from the second connecting rod. The installation strip penetrates the protective sleeve and extends to its outer surface. A positioning bolt penetrating the protective sleeve and the locking block is provided on the outer surface of the protective sleeve.

[0017] Through the above technical solution, the installation strip facilitates the connection between the connector and the protective sleeve, making the connection more secure. The positioning bolt penetrates the protective sleeve and the locking block, further enhancing the connection strength between the protective sleeve and the second protective sleeve, preventing the second protective sleeve from loosening or separating from the protective sleeve during the operation of the flaw detection device.

[0018] Compared with the prior art, this utility model provides an impact-resistant magnetic flux leakage flaw detection device, which has the following beneficial effects:

[0019] 1. This impact-resistant magnetic flux leakage flaw detector features flexible first and second steel brushes that can effectively remove impurities and rust from the surface of the workpiece without damaging it, creating favorable conditions for accurate flaw detection in the inspection section. Steel brushes at both ends of the inspection section allow for bidirectional cleaning of the workpiece surface during flaw detection, improving cleaning efficiency and accuracy. The titanium alloy protective sleeve, with its high strength, low density, and excellent corrosion resistance, provides reliable protection for the internal inspection probe, preventing damage from impacts, friction, and other external forces during use, extending the device's lifespan, and avoiding disruption to normal operation.

[0020] 2. The impact-resistant magnetic flux leakage flaw detector has an installation strip that facilitates the connection between the connector and the protective sleeve, making the connection more secure. The positioning bolt penetrates the protective sleeve and the locking block, further enhancing the connection strength between the protective sleeve and the second protective sleeve, preventing the second protective sleeve from loosening or separating from the protective sleeve during the operation of the flaw detector. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0023] Figure 3 This is a schematic diagram of the cross-sectional structure of the present invention. Figure 1 ;

[0024] Figure 4 This is a schematic diagram of the cross-sectional structure of the present invention. Figure 2 ;

[0025] Figure 5 This is a schematic diagram of the disassembled structure of the tracking disc and protective sleeve of this utility model. Figure 1 ;

[0026] Figure 6 This is a schematic diagram of the disassembled structure of the tracking disc and protective sleeve of this utility model. Figure 2 .

[0027] The components are as follows: 1. Connecting rod one; 2. Connecting flange; 3. Protective disc; 4. Connecting sleeve; 5. First steel brush; 6. Detection section; 7. Second steel brush; 8. Connecting rod two; 9. Tracking section; 10. Tracking disc; 11. Limiting groove; 12. Protective sleeve one; 13. Positioning bolt; 14. Connecting head; 15. Protective sleeve; 16. Detection probe; 17. Slot; 18. Locking block; 19. Protective sleeve two; 20. Positioning bolt; 21. Installation strip. Detailed Implementation

[0028] 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.

[0029] Example 1: As Figure 1-6 As shown, the present invention provides an impact-resistant magnetic flux leakage flaw detection device, including a connecting rod 1, a connecting rod 8, and a protective sleeve 15. A connecting flange 2 and a protective plate 3 are fixedly installed at one end of the connecting rod 1 near the connecting rod 8. A connecting sleeve 4 is fixedly installed at the other end of the protective plate 3 away from the connecting rod 1. A first steel brush 5, a detection section 6, a second steel brush 7, and the connecting rod 8 are sequentially fixedly installed at the other end of the connecting sleeve 4 away from the connecting rod 1. A tracking plate 10 is fixedly installed at the other end of the connecting rod 8 away from the connecting rod 1. A protective sleeve 12 is snapped onto the outer ring of the tracking plate 10 away from the center line. A detection probe 16 is fixedly installed on the inner surface of the protective sleeve 15. A protective sleeve 29 with a diameter shorter than the diameter of the protective sleeve 15 is fixedly installed at the other end of the protective sleeve 15 away from the center line.

[0030] Specifically, a limiting groove 11 is provided on the outer ring of the tracking disk 10. The tracking disk 10 is engaged with a protective sleeve 12 through the limiting groove 11. A positioning bolt 13 extending into the interior of the tracking disk 10 is provided through the outer ring of the protective sleeve 12. The advantage is that the limiting groove 11 of the tracking disk 10 can be easily installed onto the protective sleeve 12, so that the protective sleeve 12 can be stably engaged with the tracking disk 10. The setting of the positioning bolt 13 further enhances the firmness of the connection between the protective sleeve 12 and the tracking disk 10, and can play a protective role.

[0031] Specifically, the positioning bolts 13 are provided in two identical sets, with each set having multiple identical positioning bolts 13 arranged in a ring around the center line of the protective sleeve 12. The two sets of positioning bolts 13 are symmetrically distributed around the center line of the protective sleeve 12. The advantage is that the two sets of ring-shaped and symmetrically arranged positioning bolts 13 fix the protective sleeve 12 from multiple angles, which not only enhances the connection strength between the protective sleeve 12 and the tracking disk 10, but also effectively resists the impact of external forces from different directions, improving the stability of the protective sleeve 12 during flaw detection.

[0032] Specifically, the first steel brush 5 and the second steel brush 7 are flexible steel brushes, located at both ends of the inspection section 6. The protective sleeve 15 is made of titanium alloy. The advantages are that the flexible first steel brush 5 and the second steel brush 7 can effectively remove impurities, rust, etc. from the surface of the workpiece without damaging it, creating favorable conditions for the accurate flaw detection of the inspection section 6. Steel brushes are installed at both ends of the inspection section 6, which can clean the workpiece surface in both directions during the flaw detection process, improving cleaning efficiency and flaw detection accuracy. The titanium alloy protective sleeve 15, due to its high strength, low density, and good corrosion resistance, can provide reliable protection for the internal inspection probe 16, preventing damage to the inspection probe 16 due to impacts, friction, or other external forces during use, and extending the service life of the flaw detection device.

[0033] Example 2: Figure 2-6 As shown, this is an improvement on the previous embodiment.

[0034] Specifically, a tracking section 9 is fixedly installed on the outer surface of the connecting rod 2 8, and a connector 14 is fixedly installed on the end of the protective sleeve 15 near the protective sleeve 12. The advantage is that the tracking section 9 is installed on the outer surface of the connecting rod 2 8, which can monitor the position and running trajectory of the flaw detection device in the pipeline and other objects being inspected in real time, providing operators with accurate device operation information and facilitating the monitoring and adjustment of the flaw detection process.

[0035] Specifically, the protective sleeve 15 has a slot 17 at one end near the connector 14, and a locking block 18 is fixedly installed on the inner surface of the second protective sleeve 19. The locking block 18 is compatible with the slot 17. The advantage is that the slot 17 on the protective sleeve 15 is compatible with the locking block 18 on the inner surface of the second protective sleeve 19, which facilitates the installation and removal of the second protective sleeve 19. When the second protective sleeve 19 needs to be replaced due to wear or damage during the flaw detection process, the operator can quickly remove it for replacement, which improves the maintenance efficiency of the flaw detection device and reduces maintenance costs.

[0036] Specifically, an installation strip 21 is fixedly installed at the end of the connector 14 away from the connecting rod 8. The installation strip 21 passes through the protective sleeve 15 and extends to its outer surface. A positioning bolt 20 that passes through the protective sleeve 15 and the locking block 18 is provided on the outer surface of the protective sleeve 15. The advantage is that the installation strip 21 facilitates the connection between the connector 14 and the protective sleeve 15, making the connection more secure. The positioning bolt 20 passes through the protective sleeve 15 and the locking block 18, further enhancing the connection strength between the protective sleeve 15 and the second protective sleeve 19, preventing the second protective sleeve 19 from loosening or separating from the protective sleeve 15 during the operation of the flaw detection device.

[0037] Working Principle: During use, the limiting groove 11 of the tracking disk 10 facilitates its installation onto the protective sleeve 12, ensuring a stable connection between the protective sleeve 12 and the tracking disk 10. The positioning bolt 13 further enhances the connection between the protective sleeve 12 and the tracking disk 10, providing protection. The flexible first steel brush 5 and second steel brush 7 effectively remove impurities and rust from the surface of the workpiece without damaging it, creating favorable conditions for accurate flaw detection in the inspection section 6. Steel brushes at both ends of the inspection section 6 allow for bidirectional cleaning of the workpiece surface during flaw detection, improving cleaning efficiency and inspection accuracy. The titanium alloy protective sleeve 15, with its high strength, low density, and excellent corrosion resistance, provides reliable protection for the internal inspection probe 16. To prevent damage to the detection probe 16 from impacts, friction, or other external forces during use and to extend the service life of the flaw detection device, the tracking section 9 is installed on the outer surface of the connecting rod 8. It can monitor the position and trajectory of the flaw detection device within the pipe or other inspected object in real time, providing operators with accurate operational information and facilitating monitoring and adjustment of the flaw detection process. The slot 17 on the protective sleeve 15 matches the locking block 18 on the inner surface of the protective sleeve 19, facilitating the installation and removal of the protective sleeve 19. When the protective sleeve 19 needs replacement due to wear or damage during flaw detection, operators can quickly remove and replace it, improving the maintenance efficiency and reducing maintenance costs. The installation strip 21 facilitates the connection between the connector 14 and the protective sleeve 15, making the connection more secure. The positioning bolt 20 penetrates the protective sleeve 15 and the locking block 18, further enhancing the connection strength between the protective sleeve 15 and the protective sleeve 19, preventing loosening or separation of the protective sleeve 19 and the protective sleeve 15 during the operation of the flaw detection device.

[0038] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An impact-resistant magnetic flux leakage flaw detection device, comprising a connecting rod one (1), a connecting rod two (8), and a protective sleeve (15), characterized in that: A connecting flange (2) and a protective disc (3) are fixedly installed at one end of the connecting rod 1 (1) near the connecting rod 2 (8). A connecting sleeve (4) is fixedly installed at the other end of the protective disc (3) away from the connecting rod 1 (1). A first steel brush (5), a detection section (6), a second steel brush (7), and a connecting rod 2 (8) are fixedly installed sequentially at the other end of the connecting sleeve (4) away from the connecting rod 1 (1). A tracking disc (10) is fixedly installed at the other end of the connecting rod 2 (8) away from the connecting rod 1 (1). A protective sleeve 1 (12) is snapped onto the outer ring of the tracking disc (10) away from the center line. A detection probe (16) is fixedly installed on the inner surface of the protective sleeve (15). A protective sleeve 2 (19) with a diameter shorter than that of the protective sleeve (15) is fixedly installed at the other end of the protective sleeve (15) away from the center line.

2. The impact-resistant magnetic flux leakage flaw detection device according to claim 1, characterized in that: The tracking disk (10) has a limiting groove (11) on its outer ring. The tracking disk (10) is secured to a protective sleeve (12) through the limiting groove (11). A positioning bolt (13) extending into the tracking disk (10) is provided through the outer ring of the protective sleeve (12).

3. The impact-resistant magnetic flux leakage flaw detection device according to claim 2, characterized in that: The positioning bolts (13) are provided in two identical sets. Each set of positioning bolts (13) has the same number of bolts and they are arranged in a ring about the center line of the protective sleeve (12). The two sets of positioning bolts (13) are symmetrically distributed about the center line of the protective sleeve (12).

4. The impact-resistant magnetic flux leakage flaw detector according to claim 1, characterized in that: The first steel brush (5) and the second steel brush (7) are flexible steel brushes. The first steel brush (5) and the second steel brush (7) are located at both ends of the detection section (6). The protective sleeve (15) is a titanium alloy protective sleeve.

5. The impact-resistant magnetic flux leakage flaw detection device according to claim 1, characterized in that: The outer surface of the connecting rod 2 (8) is fixedly installed with a tracking section (9), and the protective sleeve (15) is fixedly installed with a connector (14) at one end near the protective sleeve 1 (12).

6. The impact-resistant magnetic flux leakage flaw detection device according to claim 1, characterized in that: The protective sleeve (15) has a slot (17) at one end near the connector (14), and a block (18) is fixedly installed on the inner surface of the second protective sleeve (19), and the block (18) is adapted to the slot (17).

7. The impact-resistant magnetic flux leakage flaw detection device according to claim 5, characterized in that: An installation strip (21) is fixedly installed at the end of the connector (14) away from the second connecting rod (8). The installation strip (21) penetrates the protective sleeve (15) and extends to its outer surface. A positioning bolt (20) penetrating the protective sleeve (15) and the locking block (18) is provided on the outer surface of the protective sleeve (15).

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