A pipeline anti-corrosion coating detection device

Abstract

The present invention discloses a pipeline anti-corrosion layer detection device, which relates to the technical field of anti-corrosion layer detection. It includes a main body, and the main body includes a support pipe. Two groups of brackets are slidably sleeved on the inner wall of the support pipe. One group of transmission shafts are respectively rotatably sleeved on the inner walls of the two groups of brackets. One group of connecting heads are respectively fixedly connected to the ends of the two groups of transmission shafts. One group of detection mechanisms are respectively arranged at both ends of the support pipe. By means of multiple groups of the first sleeve, the second sleeve and the third sleeve to support the detector, the detector is close to the inner wall of the pipeline, so that the detector can accurately detect the pipeline well. And during the detection process, the pipeline can be detected for the second time, thus further ensuring the accuracy during the detection process. And placing the detection device inside the pipeline for detection does not require the pipeline to be dismantled. Avoiding the dismantling of the pipeline also avoids welding the pipeline again after the detection is completed, reducing the cost.

Description

Technical Field

[0001] The present invention relates to the technical field of anti-corrosion layer detection, and in particular to a pipeline anti-corrosion layer detection device. Background Art

[0002] The pipeline anti-corrosion layer is a protection technology to prevent pipelines from being corroded by soil, air, and conveying media (such as oil and natural gas). Most pipelines for transporting oil and gas are in complex soil environments, and the conveyed media are mostly corrosive. Therefore, both the inner and outer walls of the pipelines may be corroded. Once the pipeline is corroded and perforated, it will cause oil and gas leakage, not only interrupting transportation, but also polluting the environment, and even possibly causing fires and hazards.

[0003] A pipeline anti-corrosion layer detection device disclosed in the existing patent (publication number: CN118858370A) includes a support device. The support device includes a support frame. The inner wall of the top of the support frame is fixedly connected with a connecting shaft. A fixing frame is arranged at the center of the connecting shaft. The outer wall of the fixing frame is fixedly connected with the connecting shaft. A groove is opened on the inner wall of the fixing frame. A detection mechanism is arranged inside the fixing frame. The outer wall of the fixing frame is fixedly connected with a first connecting block. A first sliding block is arranged on the top of the first connecting block. After clamping the pipeline through an adjusting component, the outer wall of the pipeline is detected by the detection mechanism. At the same time, a first motor drives the pipeline to move through a first auxiliary roller, thus avoiding the dead angle area between the pipeline and the adjusting component and improving the working efficiency of detecting the anti-corrosion layer on the outer wall of the pipeline.

[0004] However, the above technical solution still has certain defects. In the process of detecting the anti-corrosion layer of the pipeline in the above technical solution, the pipeline needs to be disassembled section by section and then placed on the detection device section by section for detection. When detecting, the detector detects from the outside of the pipeline. When detecting the anti-corrosion coating inside the pipeline, the detection result is not accurate enough. Therefore, a pipeline anti-corrosion layer detection device is proposed. Summary of the Invention

[0005] Based on this, the purpose of the present invention is to provide a pipeline anti-corrosion layer detection device to solve the technical problems raised in the above background.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A pipeline anti-corrosion layer detection device includes a main body. The main body includes a support pipe. Two groups of brackets are slidably sleeved on the inner wall of the support pipe. One group of transmission shafts are respectively rotatably sleeved on the inner walls of the two groups of brackets. One group of connection heads are respectively fixedly connected to the ends of the two groups of transmission shafts. One group of detection mechanisms are respectively arranged at both ends of the support pipe. The two groups of detection mechanisms are respectively connected to one group of connection heads;

[0007] The detection mechanism includes an installation component, and the installation component includes a fixing plate which is attached to the end of the support pipe. A plurality of groups of hooks are fixedly connected to the side wall of the fixing plate, and the plurality of groups of hooks extend to the inner wall of the support pipe. A rotating piece is rotatably connected to the inner wall of the fixing plate. On one side of the rotating piece located inside the support pipe, a scanning component is fixedly connected. The scanning component includes a connecting piece which is located inside the support pipe and is fixedly connected to the side wall of the rotating piece. The connecting piece is sleeved outside the transmission shaft. A plurality of groups of extension rods are hinged to the side wall of the rotating piece, and the extension rods pass through the rotating piece and extend to the outside of the support pipe. The end of each group of extension rods is respectively hinged to a first sleeve. A second sleeve is slidably sleeved inside the inner wall of the first sleeve, and a third sleeve is slidably sleeved inside the inner wall of the second sleeve. The end of the third sleeve extends outside the second sleeve, and a detector is fixedly connected to the end of the third sleeve.

[0008] As a preferred technical solution, two first motors are fixedly connected to the outer wall of the support pipe. The output end of each first motor is respectively fixedly connected to a main driving bevel gear, and the main driving bevel gear extends to the inner wall of the support pipe. One end of each transmission shaft far from the connecting head is respectively fixedly connected to a driven bevel gear, and the two driven bevel gears are simultaneously meshed with the two main driving bevel gears.

[0009] As a preferred technical solution, a threaded column is threadedly connected to the inner wall of the rotating piece. A groove matching the connecting head is provided at one end of the threaded column located inside the support pipe, and the rotation direction of the transmission shaft is matched with the thread of the threaded column.

[0010] As a preferred technical solution, a reset cable is fixedly connected to the inner wall of the third sleeve. The end of the reset cable passes through the inner wall of the connecting piece. A stretching spring is arranged on the inner wall of the second sleeve, and the stretching spring is sleeved outside the reset cable. One end of the stretching spring is fixedly connected to the inner wall of the third sleeve, and the other end of the stretching spring is fixedly connected to the inner wall of the first sleeve. A plurality of groups of guide pipes are fixedly connected to the side wall of the connecting piece, and the plurality of groups of guide pipes are respectively sleeved outside the outer wall of a reset cable.

[0011] As a preferred technical solution, two sets of adjusting components are arranged on the inner wall of the support pipe. Each adjusting component includes an adjusting sleeve which is slidably sleeved on the outer wall of a set of transmission shafts. A connecting ring is rotatably connected to one side of the adjusting sleeve that is in contact with the connecting piece. The connecting ring is fixedly connected to the ends of multiple reset cables on the same side. Multiple push rods are respectively fixedly connected to the side walls of each adjusting sleeve. Multiple limiting blocks are fixedly connected to the outer wall of the support pipe. A set of spring pieces are respectively fixedly connected to the inner walls of each limiting block. One end of the spring piece is fixedly connected to the inner wall of the limiting block, and the other end of the spring piece is fixedly connected to a limiting pin. The end of the limiting pin extends to the outside of the limiting block, and the limiting pin is slidably connected to the inner wall of the limiting block.

[0012] As a preferred technical solution, multiple power mechanisms are fixedly connected to the outer wall of the support pipe. Each power mechanism respectively includes a locking component. The locking component includes a limiting strip which is fixedly connected to the outer wall of the support pipe. A sliding rod extending to the outside of the limiting strip is slidably connected inside the limiting strip. A convex rod is fixedly connected to the end of the sliding rod. Multiple limiting elastic pieces are fixedly connected to the side wall of the limiting strip, and each limiting elastic piece is respectively located beside a set of tooth blocks.

[0013] As a preferred technical solution, multiple rotating shafts are rotatably connected to the side wall of the limiting strip. A set of tooth discs are respectively fixedly sleeved on the outer walls of each rotating shaft. Multiple tooth blocks are fixedly connected to the side wall of the sliding rod, and each tooth block is respectively meshed with a set of tooth discs.

[0014] As a preferred technical solution, an adjusting pipe is rotatably sleeved on the outer wall of the support pipe at a position near the middle. Multiple sliding sleeves are fixedly connected to the inner wall of the adjusting pipe. A set of convex rods are respectively slidably sleeved on the inner walls of each sliding sleeve.

[0015] As a preferred technical solution, a folding component is arranged on the outer walls of multiple rotating shafts. The folding component includes multiple first connecting rods. Each first connecting rod is respectively fixedly sleeved on the outer wall of a set of rotating shafts. The ends of multiple first connecting rods are simultaneously hinged to the side wall of a set of transition plates. Multiple second connecting rods are hinged to the side of the transition plate away from the first connecting rods. A torsion spring is arranged at the position where the transition plate contacts the second connecting rods.

[0016] As a preferred technical solution, a walking assembly is hinged to the ends of multiple groups of the second connecting rods. The walking assembly includes a frame, and the frame is simultaneously hinged to the ends of multiple groups of second connecting rods. A set of walking wheels are respectively rotatably connected to the inner wall of the frame near both ends and the middle position. A crawler belt is sleeved on the outer walls of multiple groups of walking wheels, and the crawler belt meshes with the walking wheels. Multiple groups of supporting wheels are rotatably connected to the inner wall of the frame, and multiple groups of supporting wheels are respectively located between multiple groups of walking wheels. A second motor is fixedly connected to the side wall of the frame, and the output end of each second motor is respectively connected to a set of walking wheels.

[0017] In summary, the present invention mainly has the following beneficial effects:

[0018] 1. The present invention supports the detector through multiple groups of first sleeves, second sleeves, and third sleeves, so that the detector is close to the inner wall of the pipeline, enabling the detector to accurately detect the pipeline. And at both ends of the support pipe during the detection process, a set of detection mechanisms are respectively arranged, so that the pipeline can be detected twice during the detection process, further ensuring the accuracy during the detection process. And placing the detection device inside the pipeline for detection does not require the pipeline to be demolished, making the detection process more convenient and efficient. Not demolishing the pipeline also avoids welding the pipeline again after the detection is completed, reducing costs;

[0019] 2. The present invention limits the push rod through the limit pin, making the push rod unable to reset. At this time, the reset cable pulls the third sleeve, causing the second sleeve and the third sleeve to retract inside the first sleeve. At this time, the resilience of the extension spring cannot push the third sleeve to slide out of the second sleeve. The distances between multiple groups of detectors and the support pipe are relatively close, making it more convenient for storage and reducing the space occupied. And the first connecting rod can be flipped at a certain angle, further reducing the volume of the detection device;

[0020] 3. The present invention controls the meshing state between the control tooth block and the tooth disc to control whether the rotating shaft can rotate freely, thereby controlling the angle of the first connecting rod, enabling the distance between multiple groups of crawler belts to be adjusted. The second connecting rod is hinged to the transition plate and is provided with a torsion spring. There is a weld every certain distance inside the pipeline. The setting of the torsion spring enables the crawler belt to better fit the inner wall of the pipeline. The second motor drives the walking wheels to rotate, causing the walking wheels to drive the crawler belt to rotate. The supporting wheels further provide support for the crawler belt. Utilizing the strong anti-slip ability of the crawler belt, the detection device has sufficient power to move forward inside the pipeline, ensuring the adaptability of the detection device. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0022] Figure 2For the present invention Figure 1 Schematic diagram of the enlarged structure at A in

[0023] Figure 3 Schematic diagram of the sectional structure of the support tube of the present invention;

[0024] Figure 4 For the present invention Figure 3 Schematic diagram of the enlarged structure at B in

[0025] Figure 5 Schematic diagram of the meshing state structure of the main driving bevel gear and the driven bevel gear of the present invention;

[0026] Figure 6 Schematic diagram of the explosion structure of the detection mechanism from one side view of the present invention;

[0027] Figure 7 Schematic diagram of the separated state structure of the adjusting sleeve and the rotating piece of the present invention;

[0028] Figure 8 Schematic diagram of the internal structure of the first sleeve of the present invention;

[0029] Figure 9 Schematic diagram of the sectional structure of the fixing plate, the rotating piece and the threaded column of the present invention;

[0030] Figure 10 Schematic diagram of the connection state structure of the power mechanism and the sliding sleeve of the present invention;

[0031] Figure 11 Schematic diagram of the sectional structure of the limiting strip of the present invention;

[0032] Figure 12 Schematic diagram of the explosion structure of the traveling assembly of the present invention.

[0033] In the figure: 1, main body; 2, detection mechanism; 3, power mechanism;

[0034] 101, support tube; 102, first motor; 103, main driving bevel gear; 104, bracket; 105, transmission shaft; 106, driven bevel gear; 107, connector; 108, adjusting tube; 109, sliding sleeve;

[0035] 201. Installation component; 2011. Fixed plate; 2012. Hook; 2013. Rotating piece; 2014. Threaded column; 202. Scanning component; 2021. Connecting piece; 2022. Extension rod; 2023. First sleeve; 2024. Second sleeve; 2025. Third sleeve; 2026. Detector; 2027. Extension spring; 2028. Reset cable; 2029. Guide tube; 203. Adjusting component; 2031. Adjusting sleeve; 2032. Push rod; 2033. Limiting block; 2034. Spring piece; 2035. Limiting pin; 2036. Connecting ring;

[0036] 301. Locking component; 3011. Limiting strip; 3012. Sliding rod; 3013. Tooth block; 3014. Rotating shaft; 3015. Tooth disc; 3016. Convex rod; 3017. Limiting spring piece; 302. Folding component; 3021. First connecting rod; 3022. Transition plate; 3023. Second connecting rod;

[0037] 303. Walking component; 3031. Frame; 3032. Walking wheel; 3033. Second motor; 3034. Crawler belt; 3035. Support wheel. Specific implementation mode

[0038] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention.

[0039] Next, the embodiments of the present invention will be described according to the overall structure of the present invention.

[0040] A pipeline anti-corrosion layer detection device, as Figures 1 to 12 shown, includes a main body 1. The main body 1 includes a support pipe 101. Two groups of brackets 104 are slidably sleeved on the inner wall of the support pipe 101. One group of transmission shafts 105 are respectively rotatably sleeved on the inner walls of the two groups of brackets 104. One group of connecting heads 107 are respectively fixedly connected to the ends of the two groups of transmission shafts 105. One group of detection mechanisms 2 are respectively arranged at both ends of the support pipe 101. The two groups of detection mechanisms 2 are respectively connected to one group of connecting heads 107;

[0041] The detection mechanism 2 includes an installation component 201. The installation component 201 includes a fixing plate 2011. The fixing plate 2011 is attached to the end of the support pipe 101. A plurality of groups of hooks 2012 are fixedly connected to the side wall of the fixing plate 2011. The plurality of groups of hooks 2012 extend to the inner wall of the support pipe 101. A rotating piece 2013 is rotatably connected to the inner wall of the fixing plate 2011. On one side of the rotating piece 2013 located inside the support pipe 101, a scanning component 202 is fixedly connected. The scanning component 202 includes a connecting piece 2021. The connecting piece 2021 is located inside the support pipe 101. The connecting piece 2021 is fixedly connected to the side wall of the rotating piece 2013. The connecting piece 2021 is sleeved outside the transmission shaft 105. A plurality of groups of extension rods 2022 are hinged to the side wall of the rotating piece 2013. The extension rods 2022 pass through the rotating piece 2013 and extend to the outside of the support pipe 101. At the end of each group of extension rods 2022, a first sleeve 2023 is respectively hinged. A second sleeve 2024 is slidably sleeved inside the first sleeve 2023. A third sleeve 2025 is slidably sleeved inside the second sleeve 2024. The end of the third sleeve 2025 extends outside the second sleeve 2024. A detector 2026 is fixedly connected to the end of the third sleeve 2025.

[0042] The driving shaft 105 drives the connector 107 to rotate, and the connector 107 drives the threaded column 2014 to rotate. Since the thread on the threaded column 2014 matches the rotation direction of the driving shaft 105, during the process of the driving shaft 105 driving the threaded column 2014 to rotate, the threaded connection between the threaded column 2014 and the rotating piece 2013 becomes tighter and tighter. During the rotation of the threaded column 2014, the rotating piece 2013 is driven to rotate, so that the rotating piece 2013 drives the connecting piece 2021 to rotate, thereby the connecting piece 2021 drives the extension rod 2022 to rotate, so that the extension rod 2022 drives the first sleeve 2023 to rotate, the first sleeve 2023 drives the second sleeve 2024 and the third sleeve 2025 to rotate, so that the detector 2026 rotates, thus enabling the plurality of groups of detectors 2026 to perform a full-range detection on the inner wall of the pipeline. And there is a detection mechanism 2 at each end of the support pipe 101, so the same position of the pipeline will at least undergo two-sided detection, making it not easy to miss any detection during the detection process.

[0043] Please refer with emphasis to Figures 1 to 9, two groups of first motors 102 are fixedly connected to the outer wall of the support tube 101. The output end of each group of first motors 102 is fixedly connected with a group of main drive bevel gears 103. The main drive bevel gears 103 extend to the inner wall of the support tube 101. One end of each group of transmission shafts 105 away from the connector 107 is fixedly connected with a group of driven bevel gears 106. The two groups of driven bevel gears 106 are simultaneously meshed with the two groups of main drive bevel gears 103. The inner wall of the rotating piece 2013 is threadedly connected with a threaded column 2014. A groove matching the connector 107 is provided at one end of the threaded column 2014 located inside the support tube 101. The rotation direction of the transmission shaft 105 is consistent with the thread of the threaded column 2014. A return cable 2028 is fixedly connected to the inner wall of the third sleeve 2025. The end of the return cable 2028 passes through the inner wall of the connecting piece 2021. A stretching spring 2027 is arranged on the inner wall of the second sleeve 2024. The stretching spring 2027 is sleeved outside the return cable 2028. One end of the stretching spring 2027 is fixedly connected to the inner wall of the third sleeve 2025, and the other end of the stretching spring 2027 is fixedly connected to the inner wall of the first sleeve 2023. Multiple guide tubes 2029 are fixedly connected to the side wall of the connecting piece 2021. The multiple guide tubes 2029 are respectively sleeved on the outer wall of a group of return cables 2028. Two groups of adjusting components 203 are arranged on the inner wall of the support tube 101. The adjusting component 203 includes an adjusting sleeve 2031. The adjusting sleeve 2031 is slidably sleeved on the outer wall of a group of transmission shafts 105. A connecting ring 2036 is rotatably connected to one side of the adjusting sleeve 2031 that is in contact with the connecting piece 2021. The connecting ring 2036 is fixedly connected to the ends of the multiple return cables 2028 on the same side. Multiple push rods 2032 are respectively fixedly connected to the side wall of each group of adjusting sleeves 2031. Multiple limit blocks 2033 are fixedly connected to the outer wall of the support tube 101. A group of spring pieces 2034 are respectively fixedly connected to the inner wall of each group of limit blocks 2033. One end of the spring piece 2034 is fixedly connected to the inner wall of the limit block 2033, and the other end of the spring piece 2034 is fixedly connected with a limit pin 2035. The end of the limit pin 2035 extends outside the limit block 2033, and the limit pin 2035 is slidably connected to the inner wall of the limit block 2033.

[0044] The main drive bevel gear 103 is rotated by a motor, and the main drive bevel gear 103 drives the driven bevel gear 106 to rotate, thereby driving the rotation of two groups of transmission shafts 105, and the rotation directions of the two groups of transmission shafts 105 are opposite. When not detecting, by pulling the push rod 2032, the push rod 2032 drives the adjusting sleeve 2031, and the adjusting sleeve 2031 drives the connecting ring 2036. When the push rod 2032 contacts the limit pin 2035, the inclined surface on the limit pin 2035 contacts the push rod 2032, so that the limit pin 2035 slides into the limit 2033 and compresses the spring piece 2034. After the push rod 2032 completely slides past the limit pin 2035, the spring piece 2034 rebounds to push the limit pin 2035 to reset, so that the push rod 2032 is blocked by the limit pin 2035. During the process of pulling the push rod 2032, the connecting ring 2036 drives the reset cable 2028, so that the reset cable 2028 pulls the third sleeve 2025 to slide into the second sleeve 2024. Then, as the reset cable 2028 is continuously pulled, the third sleeve 2025 pushes the second sleeve 2024 to slide into the first sleeve 2023, and the extension spring 2027 is compressed. After the push rod 2032 is blocked by the limit pin 2035, the push rod 2032 cannot be reset, so that the resilience of the extension spring 2027 cannot push the third sleeve 2025 to slide out of the second sleeve 2024. At this time, the distance between the multiple detectors 2026 and the support tube 101 is relatively close, so that the storage is more convenient and the space occupation is reduced. When in use, the limit pin 2035 is pushed so that the limit pin 2035 cannot contact the push rod 2032. At this time, the extension spring 2027 rebounds to push the third sleeve 2025 to slide out of the second sleeve 2024. And after the third sleeve 2025 completely extends out of the second sleeve 2024, under the push of the extension spring 2027, the third sleeve 2025 drives the second sleeve 2024 to slide out of the first sleeve 2023, so that the entire scanning assembly 202 is fully deployed.

[0045] Please refer particularly to Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 10 、 Figure 11 and Figure 12, a plurality of power mechanisms 3 are fixedly connected to the outer wall of the support tube 101. Each group of power mechanisms 3 respectively includes a group of locking components 301. The locking component 301 includes a limiting strip 3011 which is fixedly connected to the outer wall of the support tube 101. A sliding rod 3012 extending outside the limiting strip 3011 is slidably connected inside the limiting strip 3011. A convex rod 3016 is fixedly connected to the end of the sliding rod 3012. A plurality of limiting elastic pieces 3017 are fixedly connected to the side wall of the limiting strip 3011. Each group of limiting elastic pieces 3017 is respectively located beside a group of tooth blocks 3013. A plurality of rotating shafts 3014 are rotatably connected to the side wall of the limiting strip 3011. A group of tooth discs 3015 are respectively fixedly sleeved on the outer walls of each group of rotating shafts 3014. A plurality of tooth blocks 3013 are fixedly connected to the side wall of the sliding rod 3012. Each group of tooth blocks 3013 meshes with a group of tooth discs 3015. An adjusting tube 108 is rotatably sleeved on the outer wall of the support tube 101 at a position near the middle. A plurality of sliding sleeves 109 are fixedly connected to the inner wall of the adjusting tube 108. A group of convex rods 3016 are respectively slidably sleeved inside the inner walls of each group of sliding sleeves 109. A folding component 302 is arranged on the outer walls of the plurality of rotating shafts 3014. The folding component 302 includes a plurality of first connecting rods 3021. Each group of first connecting rods 3021 is respectively fixedly sleeved on the outer wall of a group of rotating shafts 3014. The ends of the plurality of first connecting rods 3021 are simultaneously hinged to the side wall of a group of transition plates 3022. A plurality of second connecting rods 3023 are hinged to the side of the transition plate 3022 away from the first connecting rods 3021. A torsion spring is arranged at the position where the transition plate 3022 contacts the second connecting rods 3023. A traveling component 303 is hinged to the ends of the plurality of second connecting rods 3023. The traveling component 303 includes a frame 3031 which is simultaneously hinged to the ends of the plurality of second connecting rods 3023. A group of traveling wheels 3032 are respectively rotatably connected to the inner wall of the frame 3031 at both ends and the middle position. A crawler belt 3034 is sleeved on the outer walls of the plurality of traveling wheels 3032. The crawler belt 3034 meshes with the traveling wheels 3032. A plurality of supporting wheels 3035 are rotatably connected to the inner wall of the frame 3031. The plurality of supporting wheels 3035 are respectively located between the plurality of traveling wheels 3032. A second motor 3033 is fixedly connected to the side wall of the frame 3031. The output end of each group of second motors 3033 is respectively connected to a group of traveling wheels 3032.

[0046] By rotating the adjusting pipe 108, the adjusting pipe 108 drives the sliding sleeve 109 to rotate. The sliding sleeve 109 pushes the convex rod 3016, thereby driving the sliding rod 3012 to slide inside the limiting strip 3011, causing the limiting strip 3011 to push the limiting elastic piece 3017 to slide to the other side of the limiting elastic piece 3017. At this time, the tooth block 3013 is not in contact with the rack. Then, pull the frame 3031 to change the angle between the first connecting rod 3021 and the transition plate 3022, thereby adjusting the distance between multiple crawlers 3034, so that the distance between multiple crawlers 3034 can match the inner diameter of the pipeline. Then, rotate the adjusting sleeve 2031 in the reverse direction, causing the adjusting sleeve 2031 to drive the sliding sleeve 109 to rotate in the reverse direction. At this time, the sliding rod 3012 is driven by the convex rod 3016 to slide reversely and reset, so that the tooth block 3013 meshes with the tooth disc 3015. At this time, the tooth disc 3015 cannot rotate, so the rotating shaft 3014 cannot rotate. The rotating shaft 3014 is fixedly sleeved with the first connecting rod 3021, so at this time the first connecting rod 3021 cannot flip, so that the first connecting rod 3021 is locked. The limiting elastic piece 3017 plays a blocking role on the sliding rod 3012, so that the sliding rod 3012 will not slide on the inner wall of the limiting strip 3011 without manual pushing. The second connecting rod 3023 is hinged to the transition plate 3022 and is provided with a torsion spring. There is a weld every certain distance inside the pipeline. The setting of the torsion spring enables the crawler 3034 to better fit the inner wall of the pipeline. The second motor 3033 drives the traveling wheel 3032 to rotate, so that the traveling wheel 3032 drives the crawler 3034 to rotate, and the supporting wheel 3035 further provides a supporting force for the crawler 3034. Using the strong anti-slip ability of the crawler 3034, the detection device has sufficient power to move forward inside the pipeline.

[0047] During use, the detector 2026 is supported by multiple first sleeves 2023, second sleeves 2024, and third sleeves 2025, so that the detector 2026 is close to the inner wall of the pipeline, enabling the detector 2026 to accurately detect the pipeline well. And at both ends of the support pipe 101, a set of detection mechanisms 2 are respectively arranged during the detection process, so that the pipeline can be detected twice during the detection process, thereby further ensuring the accuracy during the detection process. Placing the detection device inside the pipeline for detection does not require the pipeline to be demolished, making the detection process more convenient and efficient. Not demolishing the pipeline also avoids welding the pipeline again after the detection is completed, reducing costs. The parts not involved in this device are the same as or can be implemented using existing technologies.

[0048] Although embodiments of the present invention have been shown and described, the specific embodiments are merely explanations of the present invention and not limitations thereof. The specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art can make modifications, substitutions, and variations that do not make creative contributions to the embodiments as needed, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A pipeline anti-corrosion layer detection device, comprising a main body (1), characterized in that: The main body (1) includes a support tube (101). Two groups of brackets (104) are slidably sleeved on the inner wall of the support tube (101). One group of transmission shafts (105) are rotatably sleeved on the inner walls of the two groups of brackets (104) respectively. One group of connection heads (107) are fixedly connected to the ends of the two groups of transmission shafts (105) respectively. One group of detection mechanisms (2) are arranged at both ends of the support tube (101) respectively. The two groups of detection mechanisms (2) are respectively connected to one group of connection heads (107); The detection mechanism (2) includes an installation component (201). The installation component (201) includes a fixing plate (2011). The fixing plate (2011) is attached to the end of the support tube (101). A plurality of hooks (2012) are fixedly connected to the side wall of the fixing plate (2011). The plurality of hooks (2012) extend to the inner wall of the support tube (101). A rotating piece (2013) is rotatably connected to the inner wall of the fixing plate (2011). A scanning component (202) is fixedly connected to one side of the rotating piece (2013) located inside the support tube (101). The scanning component (202) includes a connecting piece (2021). The connecting piece (2021) is located inside the support tube (101). The connecting piece (2021) is fixedly connected to the side wall of the rotating piece (2013). The connecting piece (2021) is sleeved outside the transmission shaft (105). A plurality of extension rods (2022) are hinged to the side wall of the rotating piece (2013). The extension rods (2022) pass through the rotating piece (2013) and extend outside the support tube (101). One group of first sleeves (2023) are respectively hinged to the ends of each group of extension rods (2022). A second sleeve (2024) is slidably sleeved on the inner wall of the first sleeve (2023). A third sleeve (2025) is slidably sleeved on the inner wall of the second sleeve (2024). The end of the third sleeve (2025) extends outside the second sleeve (2024). A detector (2026) is fixedly connected to the end of the third sleeve (2025); A plurality of power mechanisms (3) are fixedly connected to the outer wall of the support pipe (101). Each power mechanism (3) includes a locking assembly (301). The locking assembly (301) includes a limiting strip (3011). The limiting strip (3011) is fixedly connected to the outer wall of the support pipe (101). A sliding rod (3012) extending to the outside of the limiting strip (3011) is slidably connected inside the limiting strip (3011). A convex rod (3016) is fixedly connected to the end of the sliding rod (3012). A plurality of limiting elastic pieces (3017) are fixedly connected to the side wall of the limiting strip (3011). Each group of limiting elastic pieces (3017) is located beside a group of tooth blocks (3013). A plurality of rotating shafts (3014) are rotatably connected to the side wall of the limiting strip (3011). A group of tooth discs (3015) are fixedly sleeved on the outer wall of each rotating shaft (3014). A plurality of tooth blocks (3013) are fixedly connected to the side wall of the sliding rod (3012). Each group of tooth blocks (3013) meshes with a group of tooth discs (3015); A folding assembly (302) is arranged on the outer walls of the plurality of rotating shafts (3014). The folding assembly (302) includes a plurality of first connecting rods (3021) and second connecting rods (3023). The ends of the plurality of second connecting rods (3023) are hinged to a traveling assembly (303).

2. The pipeline anti-corrosion layer detection device according to claim 1, characterized in that: Two first motors (102) are fixedly connected to the outer wall of the support pipe (101). A main driving bevel gear (103) is fixedly connected to the output end of each first motor (102). The main driving bevel gear (103) extends to the inner wall of the support pipe (101). A driven bevel gear (106) is fixedly connected to the end of each transmission shaft (105) away from the connector (107). The two driven bevel gears (106) are simultaneously meshed with the two main driving bevel gears (103).

3. The pipeline anti-corrosion layer detection device according to claim 1, characterized in that: A threaded column (2014) is threadedly connected to the inner wall of the rotating piece (2013). A groove matching the connector (107) is formed at one end of the threaded column (2014) located inside the support pipe (101). The rotating direction of the transmission shaft (105) is matched with the thread of the threaded column (2014).

4. The pipeline anticorrosion layer detection device according to claim 1, wherein: A reset cable (2028) is fixedly connected to the inner wall of the third sleeve (2025). The end of the reset cable (2028) passes through the inner wall of the connecting piece (2021). A stretching spring (2027) is arranged on the inner wall of the second sleeve (2024). The stretching spring (2027) is sleeved outside the reset cable (2028). One end of the stretching spring (2027) is fixedly connected to the inner wall of the third sleeve (2025). The other end of the stretching spring (2027) is fixedly connected to the inner wall of the first sleeve (2023). A plurality of guide pipes (2029) are fixedly connected to the side wall of the connecting piece (2021). The plurality of guide pipes (2029) are respectively sleeved on the outer wall of a group of reset cables (2028).

5. The pipeline anti-corrosion layer detection device according to claim 4, characterized in that: Two sets of adjusting components (203) are arranged on the inner wall of the support tube (101). Each adjusting component (203) includes an adjusting sleeve (2031). The adjusting sleeve (2031) is slidably sleeved on the outer wall of a set of transmission shafts (105). A connecting ring (2036) is rotatably connected to the side of the adjusting sleeve (2031) that fits with the connecting piece (2021). The connecting ring (2036) is fixedly connected to the ends of multiple reset cables (2028) on the same side. Multiple push rods (2032) are respectively fixedly connected to the side walls of each adjusting sleeve (2031). Multiple limit blocks (2033) are fixedly connected to the outer wall of the support tube (101). A set of spring pieces (2034) are respectively fixedly connected to the inner walls of each limit block (2033). One end of the spring piece (2034) is fixedly connected to the inner wall of the limit block (2033), and the other end of the spring piece (2034) is fixedly connected to a limit pin (2035). The end of the limit pin (2035) extends to the outside of the limit block (2033), and the limit pin (2035) is slidably connected to the inner wall of the limit block (2033).

6. The pipeline anticorrosion layer detection device according to claim 1, wherein: An adjusting tube (108) is rotatably sleeved on the outer wall of the support tube (101) at a position near the middle. Multiple sliding sleeves (109) are fixedly connected to the inner wall of the adjusting tube (108). A set of convex rods (3016) are respectively slidably sleeved in the inner walls of each sliding sleeve (109).

7. The pipeline anti-corrosion layer detection device according to claim 1, characterized in that: Each set of the first connecting rods (3021) is fixedly sleeved on the outer wall of a set of rotating shafts (3014). The ends of multiple first connecting rods (3021) are simultaneously hinged to the side wall of a set of transition plates (3022). Multiple second connecting rods (3023) are hinged to the side of the transition plate (3022) away from the first connecting rods (3021). A torsion spring is arranged at the position where the transition plate (3022) contacts the second connecting rods (3023).

8. The pipeline anticorrosion layer detection device according to claim 7, wherein: The traveling component (303) includes a frame (3031). The frame (3031) is simultaneously hinged to the ends of multiple second connecting rods (3023). A set of traveling wheels (3032) are respectively rotatably connected to the inner wall of the frame (3031) at both ends and the middle position. A crawler belt (3034) is sleeved on the outer walls of multiple traveling wheels (3032). The crawler belt (3034) meshes with the traveling wheels (3032). Multiple supporting wheels (3035) are rotatably connected to the inner wall of the frame (3031). Multiple supporting wheels (3035) are respectively located between multiple traveling wheels (3032). A second motor (3033) is fixedly connected to the side wall of the frame (3031). The output ends of each second motor (3033) are respectively connected to a set of traveling wheels (3032).

Images