An AUT-based industrial pipeline weld detection device

Abstract

The utility model relates to a kind of based on AUT industrial pipeline weld detection device, including the rotating mechanism for driving pipeline rotation, base frame, mounting plate and pull rod;First, the rotating mechanism of driving pipeline rotation is started, lifting mechanism on base frame is started, driving mounting plate moves along longitudinal direction, so that ultrasonic probe on detection arm is covered weld area, first motor starts work, its output shaft drives the rotation of fixed sleeve's rotating rod.Rotation of rotating rod is slid in the guide hole of mounting block by pull rod to pull reciprocating rod, to further drive detection arm and ultrasonic probe reciprocate, under the synergistic effect of pipeline rotation, probe longitudinal movement and reciprocation, ultrasonic probe can be according to predetermined trajectory to industrial pipeline weld comprehensive, continuous detection, through the collection and analysis of ultrasonic signal.

Description

Technical Field

[0001] This utility model relates to the field of non-destructive testing technology, specifically to an AUT-based industrial pipeline weld inspection device. Background Technology

[0002] Currently, ultrasonic testing technology is widely used for quality inspection of industrial pipeline welds. Traditional testing methods typically involve a rotating mechanism driving the pipeline to rotate around its own axis, while an operator holds an ultrasonic probe and moves it back and forth along the pipeline's axis at the weld edge. Ultrasonic signals are collected through frictional coupling between the probe and the weld surface to identify internal defects. However, this method lacks precise control over the probe's trajectory, making automated scanning impossible and failing to meet the demands of high-precision, high-efficiency industrial testing. Furthermore, the probe's movement speed, pressure, and alignment accuracy with the weld are highly dependent on the operator's experience, making it susceptible to signal distortion due to fatigue or operational errors, increasing the risk of missed defects. Utility Model Content

[0003] The main purpose of this invention is to provide an AUT-based industrial pipeline weld inspection device to solve the problems of existing technologies that lack precise control over the probe's movement trajectory, cannot achieve automated scanning, and are difficult to adapt to the high-precision and high-efficiency industrial inspection requirements.

[0004] To achieve the above objectives, this utility model provides an AUT-based industrial pipeline weld inspection device, including a rotating mechanism for driving the pipeline to rotate, a base frame, a mounting plate, and a tie rod;

[0005] A lifting mechanism for longitudinal movement of the mounting plate is provided on the base frame and is located on one side of the rotating mechanism. A first motor is fixed on one side wall of the mounting plate and a mounting block is fixed on the other side. A guide hole is opened on the mounting block along the axis of the pipe's rotation. A reciprocating rod slides in the guide hole. A probe arm is fixed at the outer end of the reciprocating rod and an ultrasonic probe is installed on the probe arm.

[0006] The output shaft of the first motor passes through the mounting plate and the rotating rod.

[0007] The two ends of the pull rod are hinged to the inner end of the reciprocating rod and the end of the rotating rod away from the output shaft of the first motor, respectively.

[0008] Preferably, a horizontal plate is vertically fixed at the end of the probe arm away from the reciprocating rod. The horizontal plate has a receiving groove and a screw hole for installing the ultrasonic probe. The screw hole is connected to the receiving groove and is screwed with a bolt. The bolt abuts against the ultrasonic probe.

[0009] Preferably, a spray gun for spraying coupling fluid is fixedly installed on the horizontal plate, with the spray gun nozzle facing the pipeline.

[0010] Preferably, the lifting mechanism is a first cylinder, the cylinder seat of the first cylinder is fixedly connected to the base frame, and the piston rod is fixedly connected to the mounting plate through a connecting plate.

[0011] Preferably, the rotating mechanism includes a table body, a bracket, and a second motor;

[0012] The tabletop has a through groove along its length. Two slide rails are arranged parallel to each other on both sides of the through groove. A slider slides on each slide rail. The bracket is fixedly mounted on the two sliders. A clamping mechanism for clamping the pipe is mounted on one side of the bracket, and a second motor is fixed on the other side. The output shaft of the second motor is fixedly connected to the clamping mechanism. The bracket is connected to a drive component for moving it along the slide rail.

[0013] Preferably, the driving component includes a third motor and a first lead screw. Two bearing plates are fixedly mounted parallel to each other on the table body. The two ends of the first lead screw are mounted on the two bearing plates and arranged along the length of the slide rail. The base of the third motor is fixedly connected to either bearing plate, and the output shaft is coaxially connected to the first lead screw. A nut seat is sleeved on the first lead screw, and the nut seat is fixedly connected to the bracket.

[0014] Preferably, the AUT-based industrial pipeline weld inspection device further includes a positioning mechanism, which includes a support plate, a guide rod, a centering plate, and a second lead screw. There are two support plates, two guide rods, and two centering plates. The two parallel support plates are fixedly connected to the tabletop of the table body. The two guide rods are fixedly mounted on the two support plates. The two centering plates are slidably mounted on the two guide rods. The second lead screw has a left helical section and a right helical section, and both ends are rotated on the two support plates. The second lead screw and the guide rod are both perpendicular to the length direction of the slide rail.

[0015] Two centering plates are respectively screwed onto the left and right helical sections;

[0016] The second lead screw is connected to the drive component used to rotate it.

[0017] Preferably, the driving components include a drive shaft, a fourth motor, and a chain. One end of the drive shaft is coaxially connected to the second lead screw and is fixedly fitted with a driven sprocket. The base of the fourth motor is fixedly connected to the tabletop of the table body, and the output shaft is fixedly fitted with a drive sprocket. The chain is fitted on the driven sprocket and the drive sprocket.

[0018] Preferably, the base frame has an L-shaped plate, one end of which is fixedly connected to the tabletop of the table body, and the other end is equipped with a lifting mechanism.

[0019] The beneficial effects of the above scheme are:

[0020] First, the rotating mechanism that drives the pipeline to rotate is activated, causing the industrial pipeline to rotate around its own axis. Simultaneously, the lifting mechanism on the base frame is activated, moving the mounting plate longitudinally so that the ultrasonic probe mounted on the detection arm covers the weld area. Then, the first motor starts working, its output shaft driving the rotating rod of the fixed sleeve to rotate. Since both ends of the pull rod are hinged to the inner end of the reciprocating rod and the end of the rotating rod away from the output shaft of the first motor, the rotation of the rotating rod pulls the reciprocating rod to slide within the guide hole of the mounting block, thereby driving the detection arm and ultrasonic probe to reciprocate. Under the synergistic effect of pipeline rotation, longitudinal probe movement, and reciprocating motion, the ultrasonic probe can perform comprehensive and continuous inspection of the industrial pipeline weld according to a predetermined trajectory. Through the acquisition and analysis of ultrasonic signals, internal defects in the weld are identified, effectively solving the problems of insufficient precise control of probe movement trajectory and difficulty in achieving automated scanning in existing technologies, thus meeting the needs of high-precision and high-efficiency industrial inspection. Attached Figure Description

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0022] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0023] Figure 2 yes Figure 1 A magnified structural diagram of region A;

[0024] Figure 3 This is a front view structural diagram of the present invention;

[0025] Figure 4 yes Figure 3 A magnified structural diagram of region B;

[0026] Figure 5 This is a three-dimensional structural schematic diagram of the present invention from another perspective.

[0027] Explanation of reference numerals in the attached figures

[0028] 1. Pipeline; 2. Ultrasonic probe; 3. Weld; 10. Rotating mechanism; 20. Base frame; 30. Lifting mechanism; 31. Connecting plate; 40. Mounting plate; 41. First motor; 42. Mounting block; 420. Guide hole; 43. Reciprocating rod; 44. Probe arm; 45. Rotating rod; 46. Tie rod; 47. Horizontal plate; 470. Receiving groove; 48. Bolt; 50. Spray gun; 11. Table; 12. Bracket; 13. Second motor; 110. Through groove; 14. 15. Slide rail; 16. Slider; 17. Clamping mechanism; 18. Driving component; 19. Third motor; 10. First lead screw; 11. Bearing plate; 12. Nut seat; 63. Positioning mechanism; 64. Support plate; 65. Guide rod; 66. Centering plate; 67. Second lead screw; 68. Left helical section; 69. Right helical section; 60. Driving component; 61. Transmission shaft; 62. Fourth motor; 63. Chain; 644. Driven sprocket; 65. Drive sprocket. Detailed Implementation

[0029] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below. Example

[0030] For example, 1- Figure 4 As shown, this embodiment provides an AUT-based industrial pipeline weld inspection device, including a rotating mechanism 10 for driving the pipeline 1 to rotate, as shown in the figure. Figure 1 As shown, the rotating mechanism 10 includes a table body 11, a bracket 12, and a second motor 13. The tabletop of the table body 11 has a through groove 110 along its length. Two parallel slide rails 14 are arranged on both sides of the through groove 110, and a slider 15 slides on each slide rail 14. The bracket 12 is fixedly mounted on the two sliders 15. A clamping mechanism 16 for clamping the pipe 1 is rotated on one side of the bracket 12, and the second motor 13 is fixedly mounted on the other side of the bracket 12. The output shaft of the second motor 13 is fixedly connected to the clamping mechanism 16, meaning that the second motor 13 can drive the clamping mechanism 16 to rotate. The bracket 12 is connected to a drive member 17 for moving it along the slide rails 14. Figure 3As shown, the drive unit 17 includes a third motor 170 and a first lead screw 171. Two bearing plates 18 are fixedly mounted parallel to each other on the table plate of the table body 11. The two ends of the first lead screw 171 are rotated on the two bearing plates 18 and the first lead screw 171 is arranged along the length direction of the slide rail 14. The base of the third motor 170 is fixedly connected to either bearing plate 18, and the output shaft of the third motor 170 is coaxially connected to the first lead screw 171. A nut seat 19 (considered as a lead screw nut) is sleeved on the first lead screw 171, and the nut seat 19 is fixedly connected to the bracket 12. The third motor 170 starts, driving the first lead screw 171 to rotate. The first lead screw 171 drives the bracket 12 to move along the slide rail 14 through the nut seat 19 until the weld 3 of the pipe 1 moves to the inspection area, further driving the second motor 13 to work. The second motor 13 drives the pipe 1 to rotate through the clamping mechanism 16. It should be further noted that this utility model adopts the existing clamping mechanism 16, so it will not be described in detail. You can refer to the patent announcement number CN221560576U - Chinese Utility Model: A Beveling Machine Clamp. It is sufficient to clamp the pipe. The AUT industrial pipe weld inspection device also includes a base frame 20, a mounting plate 40, and a tie rod 46. The base frame 20 is provided with a lifting mechanism 30 for longitudinal movement of the mounting plate 40, and the base frame 20 is located on one side of the rotating mechanism 10. The lifting mechanism 30 is a first cylinder. The cylinder seat of the first cylinder is fixedly connected to the base frame 20, and the piston rod of the first cylinder is fixedly connected to the mounting plate 40 through the connecting plate 31. Figure 1 As shown, the base frame 20 has an L-shaped plate, one end of which is fixedly connected to the tabletop of the table body 11, and the other end of the L-shaped plate is equipped with a lifting mechanism 30. A first motor 41 is fixedly mounted on one side wall of the mounting plate 40, and a mounting block 42 is fixedly mounted on the other side, as shown. Figure 2 , Figure 4 As shown, the mounting block 42 has a guide hole 420 along the axial direction of the rotation of the pipe 1. A reciprocating rod 43 slides inside the guide hole 420. A probe arm 44 is fixed to the outer end of the reciprocating rod 43. A horizontal plate 47 is vertically fixed to the end of the probe arm 44 away from the reciprocating rod 43. The horizontal plate 47 has a receiving groove 470 and a screw hole (not shown) for mounting the ultrasonic probe 2. The screw hole is connected to the receiving groove 470 and a bolt 48 is screwed into the screw hole. The bolt 48 abuts against the ultrasonic probe 2, which facilitates the mounting of the ultrasonic probe 2 onto the horizontal plate 47. The output shaft of the first motor 41 passes through the mounting plate 40 and is fixed to the rotating rod 45. The two ends of the pull rod 46 are hinged to the inner end of the reciprocating rod 43 and the end of the rotating rod 45 away from the output shaft of the first motor 41, respectively.

[0031] First, the rotating mechanism 10 that drives the pipe 1 to rotate is started, so that the industrial pipe 1 starts to rotate around its own axis. At the same time, the lifting mechanism 30 on the base frame 20 is started, which drives the mounting plate 40 to move in the longitudinal direction, so that the ultrasonic probe 2 on the detection arm 44 comes into contact with the pipe. Then, the first motor 41 starts to work, and its output shaft drives the rotating rod 45 of the fixed sleeve to rotate. Since the two ends of the pull rod 46 are hinged to the inner end of the reciprocating rod 43 and the end of the rotating rod 45 away from the output shaft of the first motor 41, the rotation of the rotating rod 45 pulls the reciprocating rod 43 to slide within the guide hole 420 of the mounting block 42 through the pull rod 46, thereby driving the detection arm 44 and the ultrasonic probe 2 to reciprocate. Under the synergistic effect of the rotation of the pipeline 1 and the reciprocating motion of the ultrasonic probe 2, the ultrasonic probe 2 can perform comprehensive and continuous detection of the area near the weld 3 of the industrial pipeline 1 according to a predetermined trajectory. Through the acquisition and analysis of ultrasonic signals, the internal defects of the weld 3 can be identified, effectively solving the problem of lack of precise control of the probe movement trajectory and difficulty in achieving automated scanning in the existing technology, and meeting the needs of high-precision and high-efficiency industrial inspection. It should be further noted that the ultrasonic probe 2 does not move on the weld 3, but moves to perform flaw detection at both edges of the weld 3.

[0032] like Figure 1 As shown, a spray gun 50 for spraying coupling fluid is fixedly installed on the horizontal plate 47, with the nozzle of the spray gun 50 facing the pipe 1. The lifting mechanism 30 on the base frame 20 is activated. Before the mounting plate 40 moves, the spray gun 50 fixedly installed on the horizontal plate 47 starts to work, with the nozzle of the spray gun 50 facing the pipe 1, continuously spraying coupling fluid onto the surface of the weld 3 of the pipe 1, forming a good coupling medium between the ultrasonic probe 2 and the surface of the weld 3 of the pipe 1, ensuring that the ultrasonic signal can be transmitted efficiently between the probe and the pipe 1, and reducing signal attenuation and distortion caused by air blockage.

[0033] like Figure 5As shown, the AUT industrial pipeline 1 weld seam 3 inspection device also includes a positioning mechanism 60. The positioning mechanism 60 includes a support plate 61, a guide rod 62, a centering plate 620, and a second lead screw 63. There are two support plates 61, two guide rods 62, and two centering plates 620. The two parallel support plates 61 are fixedly connected to the tabletop of the table body 11. The two guide rods 62 are fixedly mounted on the two support plates 61. The two centering plates 620 are slidably sleeved on the two guide rods 62. The second lead screw 63 has a left helical section 631 and a right helical section 632, and both ends are rotated on the two support plates 61. The second lead screw 63 and the guide rods 62 are both perpendicular to the length direction of the slide rail 14. The two centering plates 620 are screwed onto the left helical section 631 and the right helical section 632, respectively. The second lead screw 63 is connected to a drive component 64 for rotating it. The drive component 64 includes a drive shaft 641, a fourth motor 642, and a chain 643. One end of the drive shaft 641 is coaxially connected to the second lead screw 63, and the drive shaft 641 is fixedly fitted with a driven sprocket 644. The base of the fourth motor 642 is fixedly connected to the tabletop of the table body 11, and the output shaft of the fourth motor 642 is fixedly fitted with a drive sprocket 645. The chain 643 is fitted on the driven sprocket 644 and the drive sprocket 645.

[0034] First, place the industrial pipe 1 between the two centering plates 620, start the fourth motor 642 to start working, and its output shaft drives the fixed drive sprocket 645 to rotate. The power is transmitted to the driven sprocket 644 through the chain 643, which in turn drives the transmission shaft 641 and the second lead screw 63, which are coaxially connected to the driven sprocket 644, to rotate synchronously. Since the second lead screw 63 has a left helical section 631 and a right helical section 632, and the two centering plates 620 are respectively screwed onto the left helical section 631 and the right helical section 632, when the second lead screw 63 rotates, the two centering plates 620 will slide towards or away from each other along the guide rod 62. When the two centering plates 620 slide towards each other, they gradually approach and clamp the pipe 1, accurately positioning the pipe 1 in a position perpendicular to the guide rod 62 and the length direction of the slide rail 14. After the pipe 1 is positioned, the third motor 170 starts, and the third motor 170 drives the first lead screw 171 to rotate. The first lead screw 171 drives the bracket 12 to move along the slide rail 14 through the nut seat 19 until the clamping mechanism 16 clamps the pipe 1, and the two centering plates 620 perform a reset action.

[0035] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. An AUT-based industrial pipeline weld inspection device, comprising a rotating mechanism for driving the pipeline to rotate, characterized in that, Also includes: A base frame is provided with a lifting mechanism for longitudinal movement of the mounting plate, and is located on one side of the rotating mechanism. A first motor is fixed on one side wall of the mounting plate, and a mounting block is fixed on the other side. The mounting block has a guide hole along the axis of rotation of the pipe. A reciprocating rod slides in the guide hole. A probe arm is fixed at the outer end of the reciprocating rod, and an ultrasonic probe is installed on the probe arm. The output shaft of the first motor passes through the rotating rod of the mounting plate. A pull rod, the two ends of which are hinged to the inner end of the reciprocating rod and the end of the rotating rod away from the output shaft of the first motor, respectively.

2. The AUT-based industrial pipeline weld inspection device according to claim 1, characterized in that, A horizontal plate is vertically fixed at one end of the probe arm away from the reciprocating rod. The horizontal plate has a receiving groove and a screw hole for installing the ultrasonic probe. The screw hole communicates with the receiving groove and is connected to a bolt. The bolt abuts against the ultrasonic probe.

3. The AUT-based industrial pipeline weld inspection device according to claim 2, characterized in that, A spray gun for spraying coupling fluid is fixedly installed on the horizontal plate, with the nozzle of the spray gun facing the pipe.

4. The AUT-based industrial pipeline weld inspection device according to claim 1, characterized in that, The lifting mechanism is a first cylinder, the cylinder seat of the first cylinder is fixedly connected to the base frame, and the piston rod is fixedly connected to the mounting plate through a connecting plate.

5. The AUT-based industrial pipeline weld inspection device according to any one of claims 1-4, characterized in that, The rotating mechanism includes a table, a bracket, and a second motor; The tabletop of the table body has a through groove along its length. Two slide rails are arranged parallel to each other on both sides of the through groove. A slider is slidably mounted on each slide rail. The bracket is fixedly mounted on the two sliders. A clamping mechanism for clamping the pipe is rotated on one side of the bracket, and a second motor is fixedly mounted on the other side. The output shaft of the second motor is fixedly connected to the clamping mechanism. The bracket is connected to a drive component for moving it along the slide rail.

6. The AUT-based industrial pipeline weld inspection device according to claim 5, characterized in that, The driving component includes a third motor and a first lead screw. Two bearing plates are fixedly mounted parallel to each other on the table surface of the table body. The two ends of the first lead screw are rotated on the two bearing plates and arranged along the length direction of the slide rail. The base of the third motor is fixedly connected to either of the bearing plates, and the output shaft is coaxially connected to the first lead screw. A nut seat is sleeved on the first lead screw, and the nut seat is fixedly connected to the bracket.

7. The AUT-based industrial pipeline weld inspection device according to claim 5, characterized in that, It also includes a positioning mechanism, which comprises a support plate, a guide rod, a centering plate, and a second lead screw. There are two support plates, two guide rods, and two centering plates. The two parallel support plates are fixedly connected to the tabletop of the table body. The two guide rods are fixedly mounted on the two support plates. The two centering plates are slidably sleeved on the two guide rods. The second lead screw has a left-hand helical section and a right-hand helical section, and both ends are rotated on the two support plates. The second lead screw and the guide rod are both perpendicular to the length direction of the slide rail. The two centering plates are respectively screwed onto the left helical section and the right helical section; The second lead screw is connected to a drive component for rotating it.

8. The AUT-based industrial pipeline weld inspection device according to claim 7, characterized in that, The driving component includes a drive shaft, a fourth motor, and a chain. One end of the drive shaft is coaxially connected to the second lead screw and is fixedly fitted with a driven sprocket. The base of the fourth motor is fixedly connected to the tabletop of the table body, and the output shaft is fixedly fitted with a drive sprocket. The chain is fitted on the driven sprocket and the drive sprocket.

9. The AUT-based industrial pipeline weld inspection device according to claim 7, characterized in that, The base frame has an L-shaped plate, one end of which is fixedly connected to the tabletop of the table body, and the other end is provided with the lifting mechanism.

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