Nondestructive testing equipment based on ultrasonic flaw detection

Abstract

The invention relates to nondestructive testing equipment based on ultrasonic flaw detection. The nondestructive testing equipment comprises a rotating unit, a water accumulation pool and an ultrasonic probe, the metal pipe section immersed in water and clear water form a continuous and stable coupling environment, ultrasonic waves emitted by the ultrasonic probe are stably transmitted into the metal pipe through the clear water coupling layer, defect reflection signals are accurately received by the probe through the clear water layer, and continuous detection of defects in the metal pipe is achieved. In the whole process, the mechanical arm accurately controls the moving track of the ultrasonic probe and is matched with constant-speed rotation and autorotation of the metal pipes, it is ensured that the probe completely covers the detection area of each metal pipe, after the single metal pipe is detected, the butt joint rod is loosened, the metal pipes are taken down, the clamping and detection processes are repeated, and finally all-dimensional nondestructive flaw detection of all the metal pipes is completed.

Description

Technical Field

[0001] The present invention relates to the technical field of non-destructive flaw detection, and in particular to non-destructive testing equipment based on ultrasonic flaw detection. Background Art

[0002] In the field of industrial non-destructive testing, ultrasonic flaw detection technology is widely used to detect internal defects in metal pipes due to its advantages such as strong penetration ability, high sensitivity, and harmlessness to workpieces. Please refer to Patent Announcement No.: CN201867395U - Chinese Utility Model Patent Ultrasonic Flaw Detection System. Currently, it can only meet the needs of testing individual steel pipes one by one, and it is difficult to adapt to large-scale, high-efficiency automated batch testing operations. In addition, ultrasonic testing in the existing technology relies on good acoustic coupling. Common coupling agent application methods, such as spraying, dripping, or manual application on the metal pipe for rotating or moving scanning, however, the above-mentioned testing process is prone to discontinuity or inconsistent thickness of the coupling layer due to centrifugal force, splashing, or uneven application, which seriously interferes with the stable transmission and reception of ultrasonic signals and reduces the reliability and repeatability of the test results. Summary of the Invention

[0003] The main purpose of the present invention is to provide a non-destructive testing equipment based on ultrasonic flaw detection to solve the problem in the prior art that during the rotation or movement scanning of metal pipes, the coupling layer may be discontinuous or have inconsistent thickness due to centrifugal force, splashing or uneven smearing, which seriously interferes with the stable transmission and reception of ultrasonic signals and reduces the reliability and repeatability of the detection results.

[0004] In order to achieve the above-mentioned object, the present invention provides a non-destructive testing device based on ultrasonic flaw detection, comprising a rotating unit, a water storage tank and an ultrasonic probe; The rotating unit comprises two symmetrically arranged base frames, each of which has an outer tube horizontally mounted on it. The inner end of the outer tube is driven to rotate by a driving mechanism, and the outer end is coaxially fixed with the main ring plate. The main ring plate is coaxially connected to the secondary ring plate through a connecting rod. Multiple through-holes are evenly distributed around the circumference of the main ring plate and the secondary ring plate. A first cylinder is fixed on the side wall of the main ring plate corresponding to each through-hole position. The piston rod of the first cylinder passes through the through-hole and is coaxially connected to the support rod. The support rod is rotatably connected to the docking rod through a first bearing. The other end of the docking rod passes through the through-hole of the secondary ring plate and abuts against one end of the metal tube, and is connected to a driving mechanism for driving its rotation. The water pool is set between the two base frames, and the lower middle part of the auxiliary ring plate is located in the water pool; The ultrasonic probe is connected to a mechanical arm which is used to drive the ultrasonic probe to move along the axial direction of the outer tube. The end of the mechanical arm is provided with an ultrasonic probe which contacts the metal tube located in the water pool.

[0005] A preferred solution is that the driving mechanism includes a second bearing, a first motor, and a first driven spur gear; The inner ring of the second bearing is fixedly sleeved on the outer wall of the outer tube, and the outer ring of the second bearing is fixedly connected to the base frame; The first motor base is fixed to the base frame, and the output shaft is fixedly sleeved on the first driving gear; The first driven spur gear is fixedly sleeved on the outer tube and meshes with the first driving gear.

[0006] A preferred solution is that the driving mechanism includes an inner tube, a third bearing, a second driving gear and a plurality of second driven spur gears. The inner tube is coaxially fixedly sleeved in the outer tube and fixedly sleeved on the third driven spur gear and the fourth driven spur gear; The inner ring of the third bearing is fixedly sleeved on the outer wall of the inner tube, and the outer ring is fixedly connected to the inner wall of the outer tube; A plurality of second driven spur gears are fixedly sleeved on the docking rod in a one-to-one correspondence and meshed with the third driven spur gear; The second driving gear is fixedly sleeved on the first motor output shaft and meshes with the fourth driven spur gear.

[0007] A preferred solution is that the first drive gear and the second drive gear are both sector gear structures.

[0008] A preferred solution is that a guide tube is coaxially arranged at the perforation position on each secondary ring plate, and two piston columns connected by a spring are slidably arranged in the guide tube. The end of the docking rod is docked with one piston column, and the other piston column passes through the limit ring at the end of the guide tube through the extension rod and is connected to the conical block.

[0009] A preferred solution is that the robotic arm includes a base, a vertical slide, a horizontal slide and a bending rod; The base is fixed on the outer wall of the water pool; A first lead screw and a moving block are provided in the vertical slideway, and a second motor drives the first lead screw to rotate; The horizontal slide is connected to the moving block through a receiving plate, and is provided with a second lead screw and a slider. The third motor drives the second lead screw to rotate; The two ends of the bending rod are respectively connected to the slider and the ultrasonic probe.

[0010] A preferred solution is that the nondestructive testing equipment based on ultrasonic flaw detection further includes a feeding unit, which includes an inclined plate and a V-shaped spring plate group bracket; The inclined plate is tilted between the two ring plates and forms an inclined feeding channel with the limiting bars on both sides; The V-shaped spring plate assembly is fixedly mounted at the downstream end of the inclined plate to support the metal pipe; The two ends of the bracket are respectively connected to the limit bar and the base frame.

[0011] A preferred solution is that the nondestructive testing equipment based on ultrasonic flaw detection further includes a discharging unit, which includes a fourth slide, an inclined plate and a second cylinder; The fourth slide is fixed on the outer wall of the water pool and is slidably provided with movable blocks; The inclined plate is connected to the movable block via a connecting plate; The second cylinder base is fixed to the water pool, and the piston rod is connected to the connecting plate through the transverse plate; Inclined plates may be inserted between adjacent metal tubes.

[0012] A preferred solution is that the first cylinder cover on each main ring plate is provided with a waterproof cover, and the waterproof cover is fixed on the main ring plate.

[0013] The beneficial effects of the above scheme are: First, place the metal tube to be inspected horizontally above the water pool between the two base frames, start the first cylinder on the main ring plate, and its piston rod pushes the support rod to extend along the axial direction of the perforation, driving the docking rod to move synchronously until the docking rods on the two side auxiliary ring plates clamp the two ends of the metal tube together, completing the fixed clamping and radial positioning of the single metal tube. If multiple metal tubes need to be inspected, repeat the above clamping action to complete the support and fixation of subsequent metal tubes in turn. Further, inject an appropriate amount of clean water into the water pool. Since the middle and lower parts of the auxiliary ring plate are located in the water pool, the middle sections of all clamped metal tubes will be immersed in water simultaneously with the auxiliary ring plate. Using clean water as a coupling medium fundamentally avoids the problem of discontinuous coupling layer or uneven thickness caused by the traditional coupling agent application method. The driving mechanism is started, and the driving mechanism drives the outer tube to rotate around its axis, thus forming a revolution state of the metal tube. The outer tube drives the metal tube to rotate synchronously as a whole through the main ring plate, the connecting rod and the secondary ring plate. At the same time, the driving mechanism connected to the docking rod is started, driving the docking rod itself to rotate. Through the cooperation of the first bearing and the support rod, the metal tube can rotate stably during the overall rotation process, thus forming a rotation state of the metal tube. The dual drive ensures that the metal tube has no radial shaking or axial displacement. Further, the robotic arm drives the ultrasonic probe to move along the axial direction of the outer tube. The ultrasonic probe contacts the bottom end of the metal tube. While the metal tube keeps rotating around its own axis, the ultrasonic probe gradually scans the surface of the metal tube along the axial direction. At this time, the metal tube section immersed in water forms a continuous and stable coupling environment with the clean water. The ultrasonic wave emitted by the ultrasonic probe is stably transmitted to the inside of the metal tube through the clean water coupling layer. The defect reflection signal is also accurately received by the probe through the clean water layer, realizing continuous detection of defects inside the metal tube. During the entire process, the robotic arm precisely controls the movement trajectory of the ultrasonic probe, coordinating with the uniform rotation and self-rotation of the metal tube to ensure that the probe fully covers the inspection area of ​​each metal tube. After the inspection of a single metal tube is completed, the docking rod is loosened to remove the metal tube, and the clamping and inspection process is repeated to finally complete the full-scale non-destructive testing of all metal tubes. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a front structural schematic diagram of the present invention; Figure 3 yes Figure 2 Schematic diagram of the structure of region A; Figure 4 It is a schematic diagram of the three-dimensional structure from another perspective of the present invention; Figure 5 It is a partial three-dimensional structural schematic diagram of the present invention; Figure 6 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 7 yes Figure 6 Schematic diagram of the structure of region B; Figure 8 yes Figure 6 Schematic diagram of the structure of the C region; Figure 9 It is a schematic diagram of the three-dimensional structure of the mechanical arm part of the present invention.

[0016] Description of Reference Numerals 1. Metal tube; 10. Rotating unit; 11. Base; 12. Outer tube; 13. Driving mechanism; 130. Second bearing; 131. First motor; 132. First driving gear; 133. First driven spur gear; 14. Main ring plate; 15. Connecting rod; 16. Secondary ring plate; 17. Perforation; 18. First cylinder; 19. Support rod; 101. Docking rod; 102. First bearing; 1021. Inner tube; 1022. Third driven spur gear; 1023. Fourth driven spur gear; 1024. Third bearing; 1025. Second driven spur gear; 1026. Second driving gear; 100. Driving mechanism; 20. Water reservoir; 30. Super Acoustic probe; 40. Robotic arm; 41. Base; 42. Vertical slide; 43. First lead screw; 44. Moving block; 45. Second motor; 46. Horizontal slide; 47. Adapter plate; 49. Bending rod; 401. Third motor; 50. Guide tube; 51. Spring; 52. Piston column; 53. Extension rod; 54. Conical block; 55. Limiting ring; 60. Feeding unit; 61. Inclined plate; 62. Limiting bar; 63. Feeding channel; 64. V-shaped spring plate group; 65. Bracket; 70. Discharging unit; 71. Fourth slide; 72. Movable block; 73. Inclined plate; 74. Connecting plate; 75. Second cylinder; 76. Horizontal plate; 80. Waterproof cover. DETAILED DESCRIPTION

[0017] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below. Example

[0018] like Figures 1-9 As shown, this embodiment provides a non-destructive testing device based on ultrasonic flaw detection, including a rotating unit 10, a water reservoir 20, and an ultrasonic probe 30. The ultrasonic probe 30 is connected to the ultrasonic flaw detection body. The ultrasonic flaw detection body of the present invention adopts existing technology, so it will not be described in detail. For reference, patent announcement numbers: CN1006248 - Ultrasonic flaw detection method and instrument or CN119064470B - An electromagnetic ultrasonic flaw detection device based on guided wave detection and its detection method, such as Figure 1 As shown, the rotating unit 10 includes two symmetrically arranged base frames 11, each of which has an outer tube 12 horizontally mounted on it. The inner end of the outer tube 12 is driven to rotate by a driving mechanism 13, and the outer end of the outer tube 12 is coaxially fixed with a main ring plate 14. The driving mechanism 13 includes a second bearing 130, a first motor 131, and a first driven spur gear 133. Figure 8 As shown, the inner ring of the second bearing 130 is fixedly mounted on the outer wall of the outer tube 12, and the outer ring of the second bearing 130 is fixedly connected to the base 11. The base of the first motor 131 is fixed to the base 11, and the output shaft of the first motor 131 is fixedly mounted on the first drive gear 132. The first driven spur gear 133 is fixedly mounted on the outer tube 12 and meshes with the first drive gear 132. When the first motor 131 is started, its output shaft drives the fixed first drive gear 132 to rotate, driving the outer tube 12 to rotate about its axis. When the outer tube 12 rotates, the inner ring of the second bearing 130, which is fixedly mounted on its outer wall, rotates synchronously. The outer ring of the second bearing 130, because it is fixedly connected to the base 11, provides stable support, ensuring smooth rotation of the outer tube 12. The main ring plate 14 is coaxially connected to the auxiliary ring plate 16 through a connecting rod 15. A plurality of through-holes 17 are evenly distributed around the circumference of the main ring plate 14 and the auxiliary ring plate 16. A first cylinder 18 is fixed on the side wall of the main ring plate 14 corresponding to each through-hole 17 (that is, a plurality of first cylinders are arranged around the circumference of each main ring plate, and the plurality of first cylinders correspond to the plurality of through-holes one by one, which can be referred to Figure 5 As shown, Figure 5 Remove the waterproof cover of the first cylinder). Figure 7As shown, the piston rod of the first cylinder 18 passes through the through-hole 17 and is coaxially connected to the support rod 19. The support rod 19 is rotatably connected to the docking rod 101 through the first bearing 102. The other end of the docking rod 101 passes through the through-hole 17 of the secondary ring plate 16 and abuts against one end of the metal tube 1, and the docking rod 101 is connected to a driving mechanism 100 for driving its rotation. The driving mechanism 100 includes an inner tube 1021, a third bearing 1024, a second drive gear 1026 and a plurality of second driven spur gears 1025. The inner tube 1021 is coaxially fixed in the outer tube 12 and fixed with the third driven spur gear 1022 and the fourth driven spur gear 1023. The inner ring of the third bearing 1024 is fixed with the outer wall of the inner tube 1021, and the outer ring is fixedly connected to the inner wall of the outer tube 12. The plurality of second driven spur gears 1025 are fixed on the docking rod 101 in a one-to-one correspondence and mesh with the third driven spur gear 1022. As shown Figure 8 As shown, the second driving gear 1026 is fixedly sleeved on the output shaft of the first motor 131 and meshes with the fourth driven spur gear 1023. The first cylinder 18 on each main ring plate 14 is covered with a waterproof cover 80, which is fixed on the main ring plate 16.

[0019] After the first motor 131 is activated, its output shaft drives the second drive gear 1026 to rotate. The second drive gear 1026 meshes with the fourth driven spur gear 1023 on the inner tube 1021, driving the inner tube 1021 to rotate about its own axis. The inner tube 1021 rotates stably within the outer tube 12 via the third bearing 1024. The third driven spur gear 1022 on the inner tube 1021 rotates accordingly and meshes with the second driven spur gear 1025 on the docking rod 101, driving the docking rod 101 to rotate. At this point, the outer tube 12, through the primary ring plate 14, connecting rod 15, and secondary ring plate 16, drives the metal tube 1 to rotate synchronously as a whole. The docking rod 101, in turn, drives the metal tube 1 to rotate about its own axis. This dual drive achieves precise coordination through gear transmission, ensuring that the metal tube 1 is free of radial wobble or axial displacement. The water reservoir 20 is positioned between the two base frames 11, with the lower and middle portions of the secondary ring plate 16 located within the reservoir 20.

[0020] like Figure 1 、 Figure 8As shown, the ultrasonic probe 30 is connected to a robotic arm 40 for driving its axial movement along the outer tube 12. The end of the robotic arm 40 is provided with the ultrasonic probe 30, which contacts the metal tube 1 located within the water reservoir 20. The robotic arm 40 includes a base 41, a vertical slide 42, a horizontal slide 46, and a bending rod 49. The base 41 is fixed to the outer wall of the water reservoir 20. The vertical slide 42 contains a first lead screw 43 and a moving block 44. The moving block is threadedly mounted on the first lead screw, and a second motor 45 drives the first lead screw 43 to rotate. The horizontal slide 46 is connected to the moving block 44 via a receiving plate 47. The horizontal slide 46 contains a second lead screw (not shown) and a slider (not shown). The slider is threadedly mounted on the second lead screw, and a third motor 401 drives the second lead screw to rotate. The bending rod 49 is connected to the slider and the ultrasonic probe 30 at both ends. The second motor 45 is driven to rotate the first lead screw 43, which is connected to the moving block 44 via the horizontal slide 46 through the receiving plate 47, thereby adjusting the height of the ultrasonic probe 30. The third motor 401 is driven to rotate the second lead screw, which in turn drives the slider along the horizontal slide 46, thereby driving the ultrasonic probe 30 to move axially along the metal tube 1. The first drive gear 132 and the second drive gear 1026 are both sector gear structures.

[0021] First, the first metal tube 1 to be inspected is placed horizontally above a water reservoir 20 between two base frames 11. The first cylinder 18 on the primary ring plate 14 is activated. The piston rod pushes the support rod 19 along the perforation 17, moving the docking rods 101 until the two docking rods 101 clamp the ends of the metal tube 1, completing the clamping. Then, clean water or another coupling agent is injected into the water reservoir 20. Because the lower and middle portions of the secondary ring plate 16 are located within the water reservoir 20, the middle section of the metal tube 1 is immersed in the water along with the secondary ring plate 16. Using clean water as the coupling medium eliminates the drawbacks of traditional coupling agents. The first motor 131 is activated, and its output shaft synchronously drives the first drive gear 132 (sector-shaped) and the second drive gear 1026 (sector-shaped) to rotate (the tooth segments of the two gears are staggered to ensure they do not mesh simultaneously). When the tooth segments of the first drive gear 132 mesh with the first driven spur gear 133, the outer tube 12 is driven to rotate about its horizontal axis. At this point, the second drive gear 1026 is in a non-meshing state, the inner tube 1021 is stationary, and the metal tube 1 does not rotate. When the teeth of the first drive gear 132 disengage and the outer tube 12 stops rotating, the teeth of the second drive gear 1026 mesh with the fourth driven spur gear 1023 on the inner tube 1021, driving the inner tube 1021 to rotate within the outer tube 12 via the third bearing 1024. The third driven spur gear 1022 on the inner tube 1021 drives the docking rod 101, causing the metal tube 1 to rotate about its own axis. As the inner tube 1021 rotates, the ultrasonic probe scans axially, covering different circumferential areas of the metal tube 1 with the help of its own rotation. The submerged metal tube 1 section forms a stable coupling environment with the clean water. Under the coordination of the two motion states, ultrasonic waves can be stably transmitted and received, achieving comprehensive detection. After the inspection of a single metal tube 1 is completed, the above process is repeated to complete the inspection of all metal tubes 1. The phase-staggered design of the sector gear tooth segments eliminates the need for an additional drive device, simplifying the structure. At the same time, this design significantly improves the accuracy of the detection process while ensuring clamping stability through the alternating drive mode of functional partitions.

[0022] First, place the metal tube 1 to be inspected horizontally above the water pool 20 between the two base frames 11, start the first cylinder 18 on the main ring plate 14, and its piston rod pushes the support rod 19 to extend axially along the perforation 17, driving the docking rod 101 to move synchronously until the docking rods 101 on the two side auxiliary ring plates 16 jointly clamp the two ends of the metal tube 1, completing the fixed clamping and radial positioning of the single metal tube 1. If multiple metal tubes 1 need to be inspected, repeat the above clamping action to complete the subsequent support and fixation of the metal tubes 1 in sequence. Further, inject an appropriate amount of clean water into the water pool 20. Since the middle and lower parts of the auxiliary ring plate 16 are located in the water pool 20, the middle sections of all clamped metal tubes 1 will be immersed in water synchronously with the auxiliary ring plate 16. Using clean water as a coupling medium fundamentally avoids the problem of discontinuous coupling layer or uneven thickness caused by the traditional coupling agent application method. The driving mechanism is started, and the driving mechanism drives the outer tube 12 to rotate around its axis, thus forming a state of revolution of the metal tube 1. The outer tube 12 drives the metal tube 1 to rotate synchronously as a whole through the main ring plate 14, the connecting rod 15 and the secondary ring plate 16. At the same time, the driving mechanism 100 connected to the docking rod 101 is started, driving the docking rod 101 itself to rotate. Through the cooperation of the first bearing 102 and the support rod 19, the metal tube 1 is able to rotate stably during the overall rotation process, thus forming a state of rotation of the metal tube 1. The dual drive ensures that the metal tube 1 has no radial shaking or axial displacement. Further, the robotic arm 40 drives the ultrasonic probe 30 to move axially along the outer tube 12. The ultrasonic probe 30 contacts the bottom end of the metal tube 1. While the metal tube 1 continues to rotate around its own axis, the ultrasonic probe 30 gradually scans the surface of the metal tube 1 along the axial direction. At this point, the submerged section of metal tube 1 forms a continuous and stable coupling environment with the clean water. The ultrasonic waves emitted by ultrasonic probe 30 are stably transmitted through the clean water coupling layer into the interior of metal tube 1. Defect reflection signals are also accurately received by the probe through the clean water layer, enabling continuous detection of defects within metal tube 1. Throughout this process, robotic arm 40 precisely controls the movement of ultrasonic probe 30, coordinating with the uniform rotation and self-rotation of metal tube 1 to ensure that the probe fully covers the inspection area of ​​each metal tube 1. After the inspection of a single metal tube 1 is completed, docking rod 101 is released to remove the metal tube 1, and the clamping and inspection process is repeated, ultimately completing the full range of non-destructive testing of all metal tubes 1.

[0023] like Figure 7 As shown, a guide tube 50 is coaxially arranged at the position of the through hole 17 on each secondary ring plate 16, and two piston rods 52 connected by a spring 51 are slidably arranged in the guide tube 50. The end of the docking rod 101 is docked with one piston rod 52, and the other piston rod 52 passes through the limit ring 55 at the end of the guide tube 50 through the extension rod 53 and is connected to the conical block 54.

[0024] The piston rod of the first cylinder 18 extends and moves, and the extension process can be divided into two states: Status 1: After the metal tube 1 to be inspected is placed horizontally above the water reservoir 20 between the two base frames 11, the first cylinder 18 on the primary ring plate 14 is activated. The piston rod of the first cylinder 18 extends outward a certain distance, pushing the support rod 19 and driving the docking rod 101 toward the secondary ring plate 16. The end of the docking rod 101 is inserted into the guide tube 50, contacting and applying thrust to one of the piston rods 52. Because the two piston rods 52 are interconnected by a spring 51, the piston is pressed backward, compressing the spring 51 and driving the other piston rod 52 and its connected extension rod 53 outward synchronously. The tapered block 54 at the end of the extension rod 53 then expands outward, tightly contacting one end of the metal tube 1 to form a symmetrical clamp. The metal tube 1 rotates (revolves) only with the outer tube 12 as a whole and does not rotate on its own. The tapered block 54, preloaded by the spring 51, provides radial clamping force, achieving adaptive centering and axial positioning of the metal tube 1.

[0025] State 2: As the outer tube 12 rotates the metal tube 1 to the inspection position (located directly above the ultrasonic probe in the water reservoir), the first cylinder 18 continues to extend its piston rod. The piston rod further pushes the docking rod 101 deeper into the secondary ring plate 16, forcing the second driven spur gear 1025 on the docking rod 101 to precisely engage with the third driven spur gear 1022 on the inner tube 1021. At this point, the inner tube 1021 rotates stably within the outer tube 12 via the third bearing 1024, driving the third driven spur gear 1022 to rotate, which in turn drives the second driven spur gear 1025 and the docking rod 101 to rotate synchronously. The rotation of the docking rod 101 is transmitted to the metal tube 1 via the first bearing 102. The ultrasonic probe 30 moves axially along the metal tube 1, coordinating with the metal tube 1's rotation to complete full circumferential inspection. This structural arrangement ensures that the outer tube 12 drives the metal tube 1 to the inspection position, while the metal tube 1 rotates on its own. Other metal tubes 1 that have not yet reached the inspection position do not rotate.

[0026] like Figure 1 As shown, the nondestructive testing equipment based on ultrasonic flaw detection also includes a feeding unit 60, which includes an inclined plate 61, a V-shaped spring plate group 64, and a bracket 65. The V-shaped spring plate group 64 includes a plurality of V-shaped spring plates, which are fixed along the width direction of the inclined plate and fixed at the bottom end of the inclined plate. The inclined plate 61 is tilted between the two pairs of ring plates 16 and forms an inclined feeding channel 63 with the limiting strips 62 on both sides. The V-shaped spring plate group 64 is fixed at the downstream end of the inclined plate 61 to support the metal pipe 1, and the metal pipe 1 is placed at the bend of the V-shaped spring plate. The two ends of the bracket 65 are respectively connected to the limiting strip 62 and the base frame 11.

[0027] The conical blocks 54 on the two secondary ring plates 16 are in a retracted state. Several metal tubes 1 to be tested are placed in an orderly manner in the inclined feeding channel 63 of the feeding unit 60. The metal tube 1 is blocked and temporarily supported by the V-shaped spring plate group 64 at the downstream end in the inclined channel by gravity. At this time, the metal tube 1 on the V-shaped spring plate group 64 is just in front of the conical blocks 54 of the two secondary rings. The two corresponding first cylinders 18 are driven to work, and the two corresponding first cylinders 18 extend the piston rod until the two conical blocks 54 clamp the metal tube 1, drive the outer tube 12 to rotate, and the metal tube 1 revolves, so that the metal tube 1 is separated from the V-shaped spring plate group 64, and the subsequent metal tubes 1 in the inclined channel automatically roll down and are replenished under the action of gravity. The new metal tube 1 is blocked and supported again by the V-shaped spring plate group 64, waiting for the next clamping cycle.

[0028] like Figure 4 As shown, the ultrasonic nondestructive testing equipment further includes a discharge unit 70, which comprises a fourth slide 71, an inclined plate 73, and a second cylinder 75. The fourth slide 71 is fixed to the outer wall of the water reservoir 20 and slidably supports a movable block 72. The inclined plate 73 is connected to the movable block 72 via a connecting plate 74. The cylinder base of the second cylinder 75 is fixed to the water reservoir 20, and the piston rod is connected to the connecting plate 74 via a cross plate 76. The inclined plate 73 can be inserted between adjacent metal pipes 1.

[0029] After the metal tube 1 completes ultrasonic testing in the water pool 20, the driving mechanism of the rotating unit 10 starts again, driving the outer tube 12 to rotate around the horizontal axis, and drives the inspected metal tube 1 to revolve along with the overall structure through the main ring plate 14, the connecting rod 15 and the secondary ring plate 16. When the metal tube 1 rotates to the preset discharge height, the driving mechanism stops and the metal tube 1 remains at this height on standby. After the metal tube 1 is in place, the second cylinder 75 starts, and the piston rod of the second cylinder 75 extends, pushing the connecting plate 74 to slide upward along the fourth slide 71 through the cross plate 76. The connecting plate 74 drives the movable block 72 to move synchronously along the fourth slide 71, thereby causing the inclined plate 73 to move with the movable block 72. During the movement, the inclined plate 73 is precisely inserted into the two metal tubes 1 to be discharged. After the tilting plate 73 is in place, the first cylinders 18 on both sides of the metal tube 1 that have been inspected start the retraction action synchronously, and the piston rod drives the docking rod 101 to move away from the metal tube 1. The docking rod 101 compresses the spring 51 through the piston column 52, so that the conical block 54 is disengaged from the end of the metal tube 1 and returns to the guide tube 50. After the metal tube 1 loses its clamping force, it falls vertically under the action of gravity and lands precisely on the tilting plate 73 that has been in place below. The metal tube 1 rolls autonomously along the plate surface under the action of gravity, and eventually slides out from the end of the tilting plate 73 and falls into the preset collection station, completing the discharging process of a single metal tube 1. Subsequently, the tilting plate 73 is completely reset, waiting for the next metal tube 1 that has completed inspection to enter the discharging cycle.

[0030] Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

Claims

1. A non-destructive testing device based on ultrasonic flaw detection, characterized in that: include: The rotating unit comprises two symmetrically arranged base frames, each of which has an outer tube horizontally mounted thereon. The inner end of the outer tube is driven to rotate by a driving mechanism, and the outer end is coaxially fixedly sleeved on the main ring plate. The main ring plate is coaxially connected to the secondary ring plate through a connecting rod. Multiple perforations are evenly distributed around the circumference of the main ring plate and the secondary ring plate. A first cylinder is fixed on the side wall of the main ring plate corresponding to each perforation position. The piston rod of the first cylinder passes through the perforation of the main ring plate and is coaxially connected to the support rod. The support rod is rotatably connected to the docking rod through a first bearing. The other end of the docking rod passes through the perforation of the secondary ring plate and abuts against one end of the metal tube, and is connected to a driving mechanism for driving its rotation. The water pool is arranged between the two base frames, and the lower middle part of the auxiliary ring plate is located in the water pool; The ultrasonic probe is connected to a mechanical arm for driving the mechanical arm to move axially along the outer tube, and the end of the mechanical arm is provided with an ultrasonic probe capable of contacting the metal tube located in the water pool.

2. The nondestructive testing equipment based on ultrasonic flaw detection according to claim 1, characterized in that: The driving mechanism includes: A second bearing, wherein the inner ring of the second bearing is fixedly sleeved on the outer wall of the outer tube, and the outer ring of the second bearing is fixedly connected to the base frame; A first motor, wherein the base of the first motor is fixed to the base frame, and the output shaft is fixedly sleeved on the first driving gear; The first driven spur gear is fixedly sleeved on the outer tube and meshes with the first driving gear.

3. The nondestructive testing equipment based on ultrasonic flaw detection according to claim 2, characterized in that: The driving agencies include: An inner tube, the inner tube is coaxially fixedly sleeved in the outer tube and fixedly sleeved on the third driven spur gear and the fourth driven spur gear; A third bearing, wherein the inner ring of the third bearing is fixedly sleeved on the outer wall of the inner tube, and the outer ring is fixedly connected to the inner wall of the outer tube; A plurality of second driven spur gears, each of which is fixedly sleeved on the docking rod in a one-to-one correspondence and meshed with the third driven spur gear; The second driving gear is fixedly sleeved on the output shaft of the first motor and meshes with the fourth driven spur gear.

4. The nondestructive testing equipment based on ultrasonic flaw detection according to claim 3 is characterized in that: The first driving gear and the second driving gear are both sector gear structures.

5. The nondestructive testing equipment based on ultrasonic flaw detection according to claim 1, characterized in that: The perforated positions on each secondary ring plate are coaxially connected to a guide tube, and two piston rods connected by a spring are slidably set in the guide tube. The end of the docking rod is docked with one piston rod, and the other piston rod passes through the limit ring at the end of the guide tube through the extension rod and is connected to the tapered block.

6. The nondestructive testing equipment based on ultrasonic flaw detection according to claim 1, characterized in that: The robotic arm includes: A base, the base being fixed on the outer wall of the water pool; A vertical slideway is provided with a first lead screw and a moving block, and a second motor drives the first lead screw to rotate; A horizontal slide is connected to the moving block through a receiving plate, and is provided with a second lead screw and a slider. A third motor drives the second lead screw to rotate; The bending rod has two ends respectively connected to the slider and the ultrasonic probe for fixed connection.

7. The nondestructive testing equipment based on ultrasonic flaw detection according to claim 1, characterized in that: It also includes a feeding unit, which includes: The inclined plate is obliquely arranged between the two ring plates and forms an inclined feeding channel with the limiting strips on both sides; A V-shaped spring plate assembly, which is fixed at the downstream end of the inclined plate and is used to support the metal pipe; The bracket has two ends connected to the limit bar and the base frame respectively.

8. The nondestructive testing equipment based on ultrasonic flaw detection according to claim 1, characterized in that: Also includes the discharge unit, including: The fourth slide is fixed on the outer wall of the water pool and is slidably provided with a movable block; An inclined plate connected to the movable block via a connecting plate; A second cylinder, wherein the cylinder base of the second cylinder is fixedly arranged in the water pool, and the piston rod is connected to the connecting plate through the transverse plate; Inclined plates may be inserted between adjacent metal tubes.

9. The nondestructive testing equipment based on ultrasonic flaw detection according to claim 1, characterized in that: The first cylinder cover on each main ring plate is provided with a waterproof cover, which is fixed on the main ring plate.

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