Pipeline defect detection equipment

Abstract

The invention relates to pipeline defect detection equipment, and relates to the technical field of pipeline detection. The detection mechanism comprises a mounting frame, a plurality of mounting racks, a plurality of laser scanning sensors, a plurality of optical fiber sensors, a plurality of acoustic emission sensors and a plurality of infrared thermal imaging sensors, the mounting frame is of a horizontal through opening structure, and the mounting racks are detachably connected to the inner wall of the mounting frame and are distributed at intervals in the circumferential direction; the laser scanning sensors, the optical fiber sensors, the acoustic emission sensors and the infrared thermal imaging sensors are distributed on the mounting racks; and the number of the clamping mechanisms is at least two, and the clamping mechanisms are distributed in the opening direction of the through hole at intervals so as to horizontally place the pipeline body and move the pipeline body. By the adoption of the technical scheme, the problems that in the prior art, a detection mode is single in detection function, can only adapt to metal pipelines through a single ultrasonic detection mode, and cannot detect the defects of pipelines made of various different materials can be solved.

Description

Technical Field

[0001] This invention relates to the field of pipeline inspection technology, and in particular to a pipeline defect detection device. Background Technology

[0002] A pipeline is a device made up of pipes, pipe fittings, valves, etc., used to transport gases, liquids, or fluids containing solid particles. Typically, fluids are pressurized by blowers, compressors, pumps, boilers, etc., and then flow from the high-pressure area to the low-pressure area in the pipeline. They can also be transported using the fluid's own pressure or gravity. Pipelines have a wide range of applications, mainly in water supply, drainage, heating, gas supply, long-distance transportation of oil and natural gas, agricultural irrigation, water conservancy projects, and various industrial installations. After production, pipelines need to be inspected to check for defects such as damage and cracks.

[0003] Chinese patent CN208206874U discloses an ultrasonic testing device for pipeline defects, comprising a sliding ring fitted around the outside of the pipeline to be tested, a movable trolley rotatably connected to the inner side of the sliding ring, a measuring block mounted on the movable trolley and pressed against the outer wall of the pipeline, a support ring fixedly mounted outside the sliding ring, and a guide tube parallel to the pipeline on the side of the support ring, with a driving device inside the guide tube for moving the support ring along the guide tube. The measuring block is moved along the length and outer perimeter of the pipeline via a transmission rope and the movable trolley, respectively, replacing the traditional manual movement method. The support ring is designed as two hinged sections connected by a snap-lock, allowing for convenient installation of the support ring on the outer perimeter of the pipeline.

[0004] The above-mentioned solution uses ultrasonic testing to measure speed; however, the actual test object may be a non-metallic pipe or a metallic pipe. Due to the significant differences in acoustic performance between non-metallic and metallic pipes, ultrasonic signals are severely attenuated and their reflection characteristics are altered in non-metallic pipes, making it difficult for the testing device to effectively identify defects such as cracks and corrosion inside non-metallic pipes. At the same time, the acoustic characteristics of pipes of different materials are different, and a single ultrasonic testing mode cannot adapt to the testing needs of pipes of various materials, thus limiting the applicability of the testing device. Summary of the Invention

[0005] This invention provides a pipeline defect detection device, which can improve the problem that the detection methods in the prior art are limited in function and can only be adapted to metal pipelines through a single ultrasonic detection method, and cannot detect defects in pipelines of various different materials.

[0006] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A pipeline defect detection device, comprising: Testing station; The testing mechanism includes a mounting frame, multiple mounting brackets, multiple laser scanning sensors, multiple fiber optic sensors, multiple acoustic emission sensors, and multiple infrared thermal imaging sensors. The mounting frame is fixedly mounted on the testing platform and has a horizontal through-hole structure to form a through hole for the pipe body to pass through. Each mounting bracket is detachably connected to the inner wall of the mounting frame and is circumferentially spaced. Each of the laser scanning sensors, fiber optic sensors, acoustic emission sensors, and infrared thermal imaging sensors is distributed in each mounting bracket, and each mounting bracket is fixed with at least two of the laser scanning sensors, fiber optic sensors, acoustic emission sensors, and infrared thermal imaging sensors. At least two clamping mechanisms are arranged and fixed on the testing platform. Each clamping mechanism is spaced apart along the opening direction of the through hole to horizontally place the pipe body and move the pipe body.

[0007] The beneficial effects of this invention are as follows: During inspection, multiple clamping mechanisms provide stable support for the pipe body, allowing it to move within the opening of the mounting frame. During this process, laser scanning sensors detect defects such as deformation and corrosion of the pipe body; fiber optic sensors monitor parameters such as strain and temperature of the pipe body; acoustic emission sensors detect defects such as cracks and leaks; and infrared thermal imaging sensors detect the temperature distribution on the surface of the pipe body. By combining the advantages of multiple sensors, this invention can effectively inspect pipes of different materials, improve the accuracy and reliability of defect detection, and thus expand the applicability of the inspection device. This addresses the problem of existing inspection methods having limited functionality, only adapting to metal pipes through a single ultrasonic inspection method, and being unable to detect defects in pipes of various materials.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, each of the clamping mechanisms includes a support plate fixedly connected to the testing table, a lower clamping frame fixedly connected to the lower end of the support plate, and a transmission mechanism fixedly installed on the upper side of the lower clamping frame. The transmission mechanism is used to support the pipe body and move the pipe body.

[0010] Furthermore, each of the clamping mechanisms also includes a support frame fixedly connected to the upper end of the support plate, an electric telescopic rod fixedly connected to the support frame, and an upper clamping frame fixed to the telescopic end of the electric telescopic rod. The telescopic end of the electric telescopic rod extends vertically downward toward the lower clamping frame, and the upper clamping frame is also fixed with the transmission mechanism. The two transmission mechanisms of the same clamping mechanism are used to clamp the upper and lower sides of the pipe body, respectively.

[0011] Furthermore, each of the transmission mechanisms includes a double universal joint, two rotating shafts with one end hinged to both ends of the double universal joint, two transmission cylinders with one end coaxially rotatably connected to the other end of the rotating shaft, and a driver with its output end coaxially fixedly connected to the other end of one of the transmission cylinders. The two transmission cylinders form a "V" shape. The other ends of the two transmission cylinders of the same transmission mechanism are rotatably connected to the corresponding lower clamping frame or the upper clamping frame. The driver is installed on the corresponding lower clamping frame or the upper clamping frame.

[0012] Furthermore, each of the transmission mechanisms also includes a reinforcing frame and a pressure sensor. The same pair of rotating shafts are rotatably connected to the corresponding reinforcing frame, and the pressure sensor is fixedly installed on the corresponding reinforcing frame. Each pressure sensor abuts against the corresponding lower clamping frame or the upper clamping frame.

[0013] Furthermore, the testing platform is fixedly equipped with two electric telescopic columns, the telescopic ends of which extend vertically upwards and are respectively fixedly connected to both sides of the mounting frame.

[0014] Furthermore, two distance sensors are fixedly connected to one end of the mounting frame. The line connecting the two distance sensors passes through the central axis of the mounting frame, and both distance sensors are used to detect the distance between themselves and the pipe body passing through the mounting frame.

[0015] Furthermore, both the lower clamp and the upper clamp are fixed with cameras located on the same vertical line, and each camera is used to photograph the pipe body.

[0016] Furthermore, it also includes a marking mechanism, which includes a pump, a feed pipe connected to the pump at one end, a diversion pipe connected to the feed pipe at the other end, and a plurality of marking nozzles connected to the side wall of the diversion pipe. The diversion pipe is annular and fixedly connected to the inner wall of the mounting frame. Each of the marking nozzles is used to spray material toward the pipe body.

[0017] Furthermore, the conveying pipe is a flexible hose or a corrugated pipe. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention; Figure 2 For the present invention Figure 1 Enlarged view of A in the middle; Figure 3 This is a perspective view of the testing mechanism of the present invention, wherein a partial structure is shown as the mounting bracket in the state before installation; Figure 4 For the present invention Figure 3 Enlarged view of section B; Figure 5 This is a perspective view of the mounting bracket of the present invention; Figure 6 This is a perspective view of the marking mechanism of the present invention; Figure 7 This is a perspective view of the clamping mechanism of the present invention; Figure 8 This is a perspective view of the transmission mechanism of the present invention.

[0019] The attached diagram lists the components represented by each number as follows: 1. Testing table; 2. Testing mechanism; 3. Marking mechanism; 4. Clamping mechanism; 5. Pipe body; 6. Support legs; 7. Storage box; 8. Controller; 9. Clearance opening; 21. Mounting frame; 22. Mounting bracket; 23. Laser scanning sensor; 24. Fiber optic sensor; 25. Acoustic emission sensor; 26. Infrared thermal imaging sensor; 27. Distance sensor; 28. Mounting hole; 29. ​​Fixing block; 210. Electric telescopic column; 221. Mounting plate; 222. Mounting screw; 223. Notch; 224. Mounting nut; 31. Feed pump; 32. Feed pipe; 33. Diverter pipe; 34. Marking nozzle; 41. Support frame; 42. Lower clamping frame; 43. Electric telescopic rod; 44. Upper clamping frame; 45. Transmission mechanism; 46. Camera; 47. Support plate; 451. Double universal joint; 452. Rotary shaft; 453. Reinforcing frame; 454. Transmission cylinder; 455. Driver; 456. Pressure sensor. Detailed Implementation

[0020] The principles and features of the present invention are described below. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0021] Example 1 like Figures 1 to 8 A pipeline defect detection device, comprising: Testing station 1; The testing mechanism 2 includes a mounting frame 21, multiple mounting brackets 22, multiple laser scanning sensors 23, multiple fiber optic sensors 24, multiple acoustic emission sensors 25, and multiple infrared thermal imaging sensors 26. The mounting frame 21 is fixedly mounted on the testing table 1. The mounting frame 21 has a horizontal through-hole structure to form a through hole for the pipe body 5 to pass through. Each mounting bracket 22 is detachably connected to the inner wall of the mounting frame 21 and is distributed circumferentially. Each laser scanning sensor 23, fiber optic sensor 24, acoustic emission sensor 25, and infrared thermal imaging sensor 26 is distributed on each mounting bracket 22, and each mounting bracket 22 is fixed with at least two of the laser scanning sensor 23, fiber optic sensor 24, acoustic emission sensor 25, and infrared thermal imaging sensor 26. At least two clamping mechanisms 4 are arranged and fixed on the testing table 1. Each clamping mechanism 4 is distributed at intervals along the opening direction of the through hole to horizontally place the pipe body 5 and move the pipe body 5.

[0022] The beneficial effects of this embodiment are as follows: During the inspection, the pipe body 5 is stably supported by multiple clamping mechanisms 4, allowing the pipe body 5 to move within the opening of the mounting frame 21. During this process, the laser scanning sensor 23 detects defects such as deformation and corrosion of the pipe body 5, the fiber optic sensor 24 monitors parameters such as strain and temperature of the pipe body 5, the acoustic emission sensor 25 detects defects such as cracks and leaks of the pipe body 5, and the infrared thermal imaging sensor 26 can detect the temperature distribution on the surface of the pipe body 5. By combining the advantages of multiple sensors, it can effectively detect pipes of different materials and improve the accuracy and reliability of defect detection, thereby expanding the applicability of the detection device. This improves the problem that the detection method in the prior art has a single detection function, can only adapt to metal pipes through a single ultrasonic detection method, and cannot detect defects of pipes of various different materials.

[0023] As one specific arrangement method, the mounting brackets 22 are arranged along the opening direction of the mounting frame 21 to form two circles, thereby achieving a multi-segment inspection effect on the pipe body 5. Furthermore, as... Figure 4 Each of the mounting brackets 22 on one of the circles is equipped with a laser scanning sensor 23 and a fiber optic sensor 24, and each of the mounting brackets 22 on another circle is equipped with an acoustic emission sensor 25 and an infrared thermal imaging sensor 26.

[0024] Based on the above embodiments, such as Figure 5Each mounting bracket 22 includes a mounting plate 221, mounting screws 222, and mounting nuts 224. One end of the mounting screw 222 is fixedly connected to one side of the mounting plate 221, and the mounting nut 224 is threadedly connected to the other end of the mounting screw 222. The mounting screw 222 passes through the mounting frame 21, so that the mounting plate 221 and the mounting nut 224 are located on the inner and outer sides of the mounting frame 21, respectively, to complete the fixed installation. The laser scanning sensor 23, the fiber optic sensor 24, the acoustic emission sensor 25, and the infrared thermal imaging sensor 26 are respectively fixedly mounted on their respective mounting plates 221.

[0025] Furthermore, a notch 223 is formed through the mounting screw 222, and the notch 223 penetrates the side wall and the other end of the mounting screw 222. A mounting hole 28 is formed through the mounting frame 21 to insert the mounting screw 222. By rotating the mounting nut 224 and removing the mounting nut 224 from the mounting screw 222, and then pulling the mounting screw 222 out of the mounting hole 28, the mounting plate 221 and the sensor mounted on it can be removed from the mounting frame 21, realizing the disassembly and replacement of the sensor. This allows for the replacement of different types of sensors according to detection needs and also facilitates the replacement of damaged sensors.

[0026] Based on the above embodiment, a controller 8 is installed in the middle of the outer wall of the detection station 1. The infrared thermal imaging sensor 26, acoustic emission sensor 25, fiber optic sensor 24 and laser scanning sensor 23 are all electrically connected to the controller 8 so that the controller 8 can control each sensor to realize automated control and data monitoring.

[0027] Furthermore, the mounting frame 21 is designed as a polygonal structure to ensure that the mounting screw 222 can be securely installed in the mounting hole 28, thereby achieving connection and fixation between components. This enables the sensors to receive instructions from the controller 8 and transmit the collected data to the controller 8, achieving automated control and data monitoring. The polygonal structure provides better stability and support, making it suitable for mounting the various sensors in the mounting frame 21.

[0028] Example 2 like Figure 1 , Figure 7 as well as Figure 8 Based on Embodiment 1, each clamping mechanism 4 includes a support plate 47 fixedly connected to the detection table 1, a lower clamping frame 42 fixedly connected to the lower end of the support plate 47, and a transmission mechanism 45 fixedly installed on the upper side of the lower clamping frame 42. The transmission mechanism 45 is used to support the pipe body 5 and move the pipe body 5.

[0029] The beneficial effect of adopting the preferred solution in the above embodiments is that, during the inspection, the pipeline body 5 is supported by each transmission mechanism 45, and the pipeline body 5 is continuously moved to complete the inspection.

[0030] As a specific arrangement, each clamping mechanism 4 can be arranged on both sides of the mounting frame 21, or on the same side of the mounting frame 21.

[0031] The lower clamp 42 abuts against the testing table 1 to improve the installation stability of the lower clamp 42.

[0032] Example 3 like Figure 1 , Figure 7 as well as Figure 8 Based on embodiments 1 and 2, each clamping mechanism 4 further includes a support frame 41 fixedly connected to the upper end of the support plate 47, an electric telescopic rod 43 fixedly connected to the support frame 41, and an upper clamping frame 44 fixed to the telescopic end of the electric telescopic rod 43. The telescopic end of the electric telescopic rod 43 extends vertically downward toward the lower clamping frame 42, and the upper clamping frame 44 is also fixed with a transmission mechanism 45. The two transmission mechanisms 45 of the same clamping mechanism 4 are used to clamp the upper and lower sides of the pipe body 5 respectively.

[0033] The beneficial effect of adopting the preferred solution in the above embodiments is that during the detection, the upper and lower transmission mechanisms 45 simultaneously clamp the pipe body 5. By activating the electric telescopic rod 43, the upper transmission mechanism 45 can increase the downward clamping force on the pipe body 5, ensuring the stability of the pipe body 5 during the movement process.

[0034] Based on the above embodiments, the electric telescopic rod 43 is communicatively connected to the controller 8. When the pipe body 5 is placed on the lower transmission mechanism 45, the controller 8 can control the electric telescopic rod 43 to extend, so that the upper clamping frame 44 drives the lower transmission mechanism 45 to move downward.

[0035] Example 4 like Figure 1 , Figure 7 as well as Figure 8 Based on embodiments 1-3, each transmission mechanism 45 includes a double universal joint 451, two rotating shafts 452 with one end hinged to both ends of the double universal joint 451, two transmission cylinders 454 with one end coaxially rotatably connected to the other end of the rotating shaft 452, and a driver 455 with its output end coaxially fixedly connected to the other end of one of the transmission cylinders 454. The two transmission cylinders 454 form a "V" shape. The other ends of the two transmission cylinders 454 of the same transmission mechanism 45 are rotatably connected to the corresponding lower clamping frame 42 or upper clamping frame 44. The driver 455 is installed on the corresponding lower clamping frame 42 or upper clamping frame 44.

[0036] The beneficial effect of the preferred solution in the above embodiments is that by setting two transmission cylinders 454 to support the pipe body 5, the two transmission cylinders 454 form a "V" shape, which can improve the stability of the pipe body 5 being clamped and transmitted, reduce shaking, and can clamp and transmit pipe bodies 5 of different sizes. During the transmission process, the driver 455 drives the corresponding transmission cylinder 454 to rotate, and the transmission cylinder 454 rotates relative to the corresponding rotation axis 452 to realize the transmission of the pipe body 5.

[0037] Based on the above embodiment, the driver 455 is communicatively connected to the controller 8. During the detection process, the driver 455 can be started by the controller 8. With the help of the transmission of the double universal joint 451, the two rotating shafts 452 will simultaneously drive the transmission cylinder 454 on them to rotate, thereby driving the pipe body 5 to move to the right, so as to achieve stable guidance and transmission.

[0038] Example 5 like Figure 1 , Figure 7 as well as Figure 8 Based on embodiments 1-4, each transmission mechanism 45 further includes a reinforcing frame 453 and a pressure sensor 456. The same pair of rotating shafts 452 are rotatably connected to the corresponding reinforcing frame 453. The pressure sensor 456 is fixedly installed on the corresponding reinforcing frame 453, and each pressure sensor 456 abuts against the corresponding lower clamping frame 42 or upper clamping frame 44.

[0039] The advantages of the preferred solution in the above embodiments are that the reinforcement frame 453 is used to rotatably connect the same pair of rotating shafts 452 to improve structural stability and reduce the possibility of damage under the gravity of the pipe body 5; and during the detection process, the upper and lower pairs of transmission cylinders 454 clamp the pipe body 5, and the force is transmitted to the two pressure sensors 456 so that the clamping force on the pipe body 5 can be monitored in real time by the pressure sensors 456, and then the clamping force of the two pairs of transmission cylinders 454 on the pipe body 5 can be adjusted under the extension and retraction of the electric telescopic rod 43.

[0040] The reinforcing frame 453 has a U-shaped structure, and the pressure sensor 456 is fixedly installed on the outside of the closed end of the reinforcing frame 453. The two arms of the rotating shaft 452 are bent towards each other and rotated to provide stable support for the transmission cylinder 454 through the reinforcing frame 453. At the same time, the two arms of the reinforcing frame 453 can undergo adaptive deformation when bearing the weight of the pipe body 5 to ensure stable installation of the pipe body 5.

[0041] Based on the above embodiments, the pressure sensor 456 is communicatively connected to the controller 8. During the detection process, the pressure sensor 456 can monitor the clamping force on the pipe body 5 in real time and adjust the clamping force through the controller 8.

[0042] Example 6 like Figures 1 to 3 Based on embodiments 1-5, the testing platform 1 is fixedly equipped with two electric telescopic columns 210. The telescopic ends of the two electric telescopic columns 210 extend vertically upward and are respectively fixedly connected to both sides of the mounting frame 21.

[0043] The beneficial effect of adopting the preferred solution in the above embodiments is that when the pipe body 5 passes through the mounting frame 21, the electric telescopic column 210 is activated, thereby moving the mounting frame 21 and placing the pipe body 5 at the center of the mounting frame 21.

[0044] Based on the above embodiment, fixing blocks 29 are installed in the middle of the outer walls on both sides of the mounting frame 21, and the telescopic ends of the two electric telescopic columns 210 are fixedly connected to the fixing blocks 29.

[0045] Furthermore, an avoidance opening 9 is provided on the upper side of the testing table 1, and the mounting frame 21 is located directly above the avoidance opening 9 to prevent the vertically moving mounting frame 21 from colliding with the testing table 1.

[0046] The electric telescopic column 210 is communicatively connected to the controller 8 so that the controller 8 can control the electric telescopic column 210 to start, thereby causing the fixing block 29 to move the mounting frame 21, so that the pipe body 5 is located at the center of the mounting frame 21.

[0047] Example 7 like Figures 1 to 3 Based on embodiments 1-6, two distance sensors 27 are fixedly connected to one end of the mounting frame 21. The line connecting the two distance sensors 27 passes through the central axis of the mounting frame 21, and both distance sensors 27 are used to detect the distance between themselves and the pipe body 5 passing through the mounting frame 21.

[0048] The beneficial effect of adopting the preferred solution in the above embodiments is that when the pipe body 5 passes through the mounting frame 21, the two distance sensors 27 can detect the distance between them and the pipe body 5, and control the electric telescopic column 210 to start according to the detection information, thereby moving the mounting frame 21 and placing the pipe body 5 at the center of the mounting frame 21.

[0049] Based on the above embodiment, the distance sensor 27 is communicatively connected to the controller 8. When the pipe body 5 passes through the mounting frame 21, the two distance sensors 27 can detect the distance between themselves and the pipe body 5. Based on the detection information, the controller 8 controls the electric telescopic column 210 to start, thereby causing the fixing block 29 to move the mounting frame 21.

[0050] Example 8 like Figure 1 and Figure 7 Based on embodiments 1-7, both the lower clamping frame 42 and the upper clamping frame 44 are fixed with cameras 46 located on the same vertical line, and each camera 46 is used to photograph the pipe body 5.

[0051] The advantages of the preferred solution in the above embodiments are that, before the inspection, the pipe body 5 can be quickly scanned by the camera 46 to identify possible defect areas, pre-screen and locate defects in the pipe body 5, thereby narrowing the scope of the formal inspection, avoiding redundant inspection of defect-free areas, and improving inspection efficiency; during the inspection, the camera 46 can detect whether the pipe body 5 is shaking during the movement. If shaking occurs, the electric telescopic rod 43 can be activated to increase the downward clamping force of the upper transmission mechanism 45 on the pipe body 5, ensuring the stability of the pipe body 5 during the movement.

[0052] Based on the above embodiment, the camera 46 is communicatively connected to the controller 8 to transmit the images it captures to the controller 8.

[0053] Under the action of the controller 8, the driver 455 and the electric telescopic rod 43 can receive the instructions of the controller 8, and the controller 8 can also receive and process the data transmitted by the pressure sensor 456 and the camera 46 to realize automated operation.

[0054] Example 9 like Figure 1 , Figure 2 as well as Figure 6 Based on embodiments 1-8, a marking mechanism 3 is also included. The marking mechanism 3 includes a material pump 31, a material conveying pipe 32 connected to the material pump 31 at one end, a diversion pipe 33 connected to the other end of the material conveying pipe 32 at the side wall, and a plurality of marking nozzles 34 connected to the side wall of the diversion pipe 33. The diversion pipe 33 is annular and fixedly connected to the inner wall of the mounting frame 21. Each marking nozzle 34 is used to spray material toward the pipe body 5.

[0055] The beneficial effect of adopting the preferred solution in the above embodiments is that when each sensor of the detection mechanism 2 detects a defect in the pipe body 5, the material pump 31 can be started to make each marking nozzle 34 spray out material and spray the material onto the defective end of the pipe body 5 to mark it, which facilitates the subsequent location of the defect.

[0056] Based on the above embodiment, support legs 6 are installed on both sides of the bottom of the inspection platform 1. A storage tank 7 is installed in the middle of the opposite face of the two support legs 6. A pump 31 is installed on the lower part of the outer wall of the storage tank 7, which stores pigment. Each marking nozzle 34 is equipped with a valve, which is communicatively connected to the controller 8. When the inspection mechanism 2 detects a defect in the pipe body 5, it transmits the defect location information to the controller 8. The controller 8 processes and analyzes the received information to determine the specific coordinates of the defect on the pipe body 5, and controls the pump 31 to start and open the valve on the corresponding marking nozzle 34. The pump 31 extracts the pigment from the storage tank 7 and then inputs the pigment into the diversion pipe 33 through the delivery pipe 32, so that the pigment is sprayed out from the marking nozzle 34, thus marking the defect location of the pipe body 5. Each marking nozzle 34 is equipped with a valve to control the spraying of pigment, thereby achieving rapid and accurate marking of the defect location and facilitating subsequent defect location locating. The controller 8 can ensure the accuracy of the marking by controlling the opening timing of the valve on the marking nozzle 34 at the corresponding position.

[0057] Example 10 like Figure 6 Based on Examples 1-9, the material conveying pipe 32 is a flexible hose or a corrugated pipe.

[0058] The advantage of adopting the preferred solution in the above embodiments is that it enables flexible installation of the diversion pipe 33 and facilitates flexible movement of the mounting frame 21.

[0059] As the working principle of this invention: When the pipe body 5 passes through the mounting frame 21, the two distance sensors 27 can detect the distance between themselves and the pipe body 5. Based on the detection information, the controller 8 controls the electric telescopic column 210 to start, thereby causing the fixing block 29 to move the mounting frame 21, so that the pipe body 5 is located at the center of the mounting frame 21. Next, multiple sensors begin to play their respective roles. Multiple laser scanning sensors 23 can use laser beams to scan the surface of the pipe. By measuring the reflection time and angle change of the laser beam, they can obtain the three-dimensional contour information of the surface of the pipe body 5, thereby detecting defects such as deformation and corrosion of the pipe. When multiple fiber optic sensors 24 are working, when the pipe body 5 is affected by factors such as stress and temperature changes, the light signal in the fiber optic will change. By detecting the change in the light signal, the strain, temperature and other parameters of the pipe can be monitored, thereby determining whether there are defects in the pipe. When multiple acoustic emission sensors 25 are working, when the pipe body 5 is subjected to external force or internal defects develop, it will generate elastic waves. The acoustic emission sensors 25 can connect to the optical fiber. These elastic wave signals are collected and converted into electrical signals for analysis, thereby detecting defects such as cracks and leaks in the pipeline. When multiple infrared thermal imaging sensors 26 are working, if there are defects in the pipeline body 5, it will cause changes in the temperature distribution on its surface. The infrared thermal imaging sensors 26 can detect the temperature distribution on the surface of the pipeline body 5. By analyzing the temperature anomaly area, it can determine whether there are defects in the pipeline. By combining the advantages of multiple sensors, it can effectively detect pipeline bodies 5 of different materials, improve the accuracy and reliability of defect detection, and thus expand the application range of the detection device. It can detect both metal and non-metal pipelines, making it suitable for the detection needs of pipelines of various materials. In addition, by rotating the mounting nut 224 to remove it from the mounting screw 222 and removing the mounting screw 222 from the mounting hole 28, the mounting plate 221 and the sensor mounted on it can be removed from the mounting frame 21, realizing the disassembly and replacement of the sensor. Different types of sensors can be replaced according to the detection needs, and it is also convenient to replace some damaged sensors.

[0060] For the clamping mechanism 4, when the pipe body 5 is placed on the lower transmission mechanism 45, the electric telescopic rod 43 can be extended by the controller 8, causing the upper clamping frame 44 to drive the lower transmission mechanism 45 to move downward. The two V-shaped transmission mechanisms 45 together clamp the pipe body 5, thus enabling the testing equipment to adapt to pipe bodies 5 of different sizes. At the same time, the pressure sensor 456 can monitor the clamping force on the pipe body 5 in real time and adjust the clamping force by the controller 8 to ensure that the pipe body 5 is firmly clamped without damage, and also to ensure that the pipe body 5 is subjected to uniform force and stable transmission during the testing process. During the testing process, the driver 455 can be started by the controller 8. With the transmission of the double universal joint 451, the two rotating shafts 452 will simultaneously drive the transmission cylinder 4 on them. 54 rotates, thereby driving the pipe body 5 to move to the right, achieving stable guidance and transmission. During this process, the pipe body 5 is first quickly scanned by the camera 46 before formal inspection to identify possible defect areas, pre-screen and locate defects in the pipe body 5, thereby narrowing the formal inspection range, avoiding redundant inspection of defect-free areas, improving inspection efficiency, and facilitating detailed inspection of the pre-screened defect locations by the inspection agency 2. When the camera 46 detects shaking during the movement of the pipe body 5, the clamping mechanism 4 automatically increases the clamping force. Finally, the pipe body 5 is moved to the inspection area of ​​the inspection agency 2 for continuous inspection. Moreover, the clamping mechanism 4 can automatically adjust the clamping force and moving speed of the pipe body 5 according to the real-time inspection needs of the inspection agency 2.

[0061] Application example: This invention is applicable to environments such as manufacturing plants, the energy industry, and construction engineering. In the steel manufacturing process, various metal pipes are produced, such as seamless steel pipes and welded steel pipes. These pipes require rigorous quality testing after production to ensure they meet relevant standards. However, steel manufacturing plants typically have noisy environments with harsh conditions such as high temperatures and dust. This pipe defect detection equipment can detect defects in metal pipes of different specifications in such environments, promptly identifying surface defects such as scratches, cracks, and slag inclusions. Meanwhile, plastic pipes are widely used in construction, water supply and drainage, and other fields. Plastic pipe manufacturers produce pipes of various materials, such as polyethylene (PE) and polypropylene (PP). During production, plastic pipes may exhibit defects such as bubbles, deformation, and color differences. This equipment can adapt to pipes of different plastic materials, performing multi-dimensional inspections and marking defect locations, providing a basis for subsequent quality control. This invention utilizes a detection mechanism 2 and multiple sensors to perform multi-dimensional detection of the pipe body 5. Different sensors have different detection sensitivities and applicable ranges for pipes of different materials. By rationally combining multiple sensors, the advantages of each sensor can be fully utilized to meet the detection needs of pipes of different materials. A marking mechanism 3 is used to mark the defect locations on the pipe body 5 by spraying, so that subsequent maintenance and handling personnel can quickly and accurately locate the defect locations. A clamping mechanism 4 is used to accommodate pipe bodies 5 of different sizes, firmly clamping the pipe body 5. At the same time, the clamping mechanism 4 also has a transmission and movement function, which can move the pipe body 5 within the detection area to achieve continuous detection of the pipe body 5.

[0062] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0063] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0064] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0065] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0066] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0067] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A pipeline defect detection device, characterized in that, include: Testing station (1); The testing mechanism (2) includes a mounting frame (21), multiple mounting brackets (22), multiple laser scanning sensors (23), multiple fiber optic sensors (24), multiple acoustic emission sensors (25), and multiple infrared thermal imaging sensors (26). The mounting frame (21) is fixedly installed on the testing table (1). The mounting frame (21) has a horizontal through-hole structure to form a through hole for the pipe body (5) to pass through. Each mounting bracket (22) can be detachably connected to the inner wall of the mounting frame (21) and is distributed circumferentially. Each laser scanning sensor (23), fiber optic sensor (24), acoustic emission sensor (25), and infrared thermal imaging sensor (26) is distributed on each mounting bracket (22), and each mounting bracket (22) is fixed with at least two of the laser scanning sensor (23), fiber optic sensor (24), acoustic emission sensor (25), and infrared thermal imaging sensor (26). The clamping mechanism (4) is arranged in at least two and is fixed on the testing table (1). Each clamping mechanism (4) is distributed at intervals along the opening direction of the through hole to place the pipe body (5) horizontally and move the pipe body (5).

2. The pipeline defect detection equipment according to claim 1, characterized in that, Each of the clamping mechanisms (4) includes a support plate (47) fixedly connected to the detection table (1), a lower clamping frame (42) fixedly connected to the lower end of the support plate (47), and a transmission mechanism (45) fixedly installed on the upper side of the lower clamping frame (42). The transmission mechanism (45) is used to support the pipe body (5) and move the pipe body (5).

3. The pipeline defect detection equipment according to claim 2, characterized in that, Each of the clamping mechanisms (4) further includes a support frame (41) fixedly connected to the upper end of the support plate (47), an electric telescopic rod (43) fixedly connected to the support frame (41), and an upper clamping frame (44) fixed to the telescopic end of the electric telescopic rod (43). The telescopic end of the electric telescopic rod (43) extends vertically downward toward the lower clamping frame (42), and the upper clamping frame (44) is also fixed with the transmission mechanism (45). The two transmission mechanisms (45) of the same clamping mechanism (4) are respectively used to clamp the upper and lower sides of the pipe body (5).

4. The pipeline defect detection equipment according to claim 3, characterized in that, Each of the transmission mechanisms (45) includes a double universal joint (451), two rotating shafts (452) with one end hinged to both ends of the double universal joint (451), two transmission cylinders (454) with one end coaxially rotatably connected to the other end of the rotating shaft (452), and a driver (455) with the output end coaxially fixedly connected to the other end of one of the transmission cylinders (454). The two transmission cylinders (454) form a "V" shape. The other ends of the two transmission cylinders (454) of the same transmission mechanism (45) are rotatably connected to the corresponding lower clamping frame (42) or the upper clamping frame (44). The driver (455) is installed on the corresponding lower clamping frame (42) or the upper clamping frame (44).

5. The pipeline defect detection equipment according to claim 4, characterized in that, Each of the transmission mechanisms (45) further includes a reinforcing frame (453) and a pressure sensor (456). The same pair of rotating shafts (452) are rotatably connected to the corresponding reinforcing frame (453). The pressure sensor (456) is fixedly installed on the corresponding reinforcing frame (453), and each pressure sensor (456) abuts against the corresponding lower clamping frame (42) or upper clamping frame (44).

6. The pipeline defect detection equipment according to claim 4, characterized in that, The testing platform (1) is fixedly equipped with two electric telescopic columns (210). The telescopic ends of the two electric telescopic columns (210) extend vertically upward and are respectively fixedly connected to both sides of the mounting frame (21).

7. The pipeline defect detection equipment according to claim 6, characterized in that, Two distance sensors (27) are fixedly connected to one end of the mounting frame (21). The line connecting the two distance sensors (27) passes through the central axis of the mounting frame (21), and both distance sensors (27) are used to detect the distance between themselves and the pipe body (5) passing through the mounting frame (21).

8. The pipeline defect detection equipment according to claim 3, characterized in that, Both the lower clamp (42) and the upper clamp (44) are fixed with cameras (46) located on the same vertical line, and each camera (46) is used to photograph the pipe body (5).

9. A pipeline defect detection device according to any one of claims 1-8, characterized in that, It also includes a marking mechanism (3), which includes a pump (31), a feed pipe (32) connected to the pump (31) at one end, a diversion pipe (33) connected to the feed pipe (32) at the other end, and a plurality of marking nozzles (34) connected to the side wall of the diversion pipe (33). The diversion pipe (33) is annular and fixedly connected to the inner wall of the mounting frame (21). Each of the marking nozzles (34) is used to spray material toward the pipe body (5).

10. The pipeline defect detection equipment according to claim 9, characterized in that, The material conveying pipe (32) is a flexible hose or a corrugated pipe.

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