A steel pipe ultrasonic flaw detector and flaw detection method thereof

Abstract

The present invention provides a steel pipe ultrasonic flaw detector and a flaw detection method thereof, comprising an ultrasonic flaw detection component, a first support component and an active feeding component, wherein the first support component comprises a plurality of support frames, each of which is rotatably connected to a symmetrically arranged driving roller, the active feeding component is arranged between the support frames, and the active feeding component comprises a plurality of flipping brackets. The present invention realizes the active feeding of the steel pipe body between the driving rollers, and supports the steel pipe body moved to the driving rollers through the cooperation of the arc frame, the first buffer component and the second buffer component. When the plurality of flipping brackets continue to flip, the steel pipe body is supported at multiple points in the extension direction under the limitation of the plurality of second arc grooves, thereby limiting the swing of the steel pipe body and stably placing the steel pipe body in the second arc groove on the driving roller, which is conducive to contacting the steel pipe body with the driving rollers at different positions, thereby helping to avoid the collision of the steel pipe body with the driving roller due to the swing.

Description

Technical Field

[0001] The invention belongs to the field of steel pipe ultrasonic flaw detection, and in particular relates to a steel pipe ultrasonic flaw detector and a flaw detection method thereof. Background Art

[0002] During the steel pipe manufacturing process, defects caused by slag inclusions or loose materials in the raw materials, as well as cracks that occur during the welding process, require ultrasonic flaw detection equipment. During the flaw detection process, the steel pipe needs to be placed on a drive roller, which drives the steel pipe to rotate. The ultrasonic probe is used to perform ultrasonic flaw detection on the rotating steel pipe surface. However, during the process of transferring the steel pipe to the drive roller, due to the heavy weight of the steel pipe and the fact that most of the steel pipes are long, it is not easy to place the steel pipe on the drive roller smoothly. When the steel pipe swings, it is easy to collide with the drive roller, which is not conducive to protecting the steel pipe and the drive roller. Summary of the Invention

[0003] In view of this, the present invention aims to propose a steel pipe ultrasonic flaw detector and a flaw detection method thereof, so as to solve the technical problem that in the process of transferring the steel pipe to the driving roller, due to the heavy weight of the steel pipe and the fact that most of the steel pipes are long, it is inconvenient to stably place the steel pipe on the driving roller. When the steel pipe swings, it is easy to collide with the driving roller, which is not conducive to protecting the steel pipe and the driving roller.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0005] In the first aspect, a steel pipe ultrasonic flaw detector includes an ultrasonic flaw detector component, a first support component and an active feeding component, the first support component includes a plurality of support frames, each of the plurality of support frames is rotatably connected to a symmetrically arranged driving roller, the active feeding component is arranged between the support frames, the active feeding component includes a plurality of flipping frames, the top end of the flipping frame has a supporting groove, the supporting groove includes a first arc groove, a guide surface and a second arc groove, an arc frame is slidingly arranged in the second arc groove, the top end of the arc frame is provided with a first buffer component, and the bottom end of the arc frame is provided with a second buffer component. During the flaw detection test, the steel pipe body is erected between the same pair of driving rollers and is located in the second arc groove.

[0006] Furthermore, an arc-shaped mounting groove is provided in the second arc-shaped groove, and two arc-shaped sliding grooves are provided in the arc-shaped mounting groove. The arc-shaped frame includes two arc-shaped plates, and the two arc-shaped plates are respectively slidably set in the two arc-shaped sliding grooves. The second buffer component is set at the top end of the two arc-shaped plates, and the second buffer component is set at the bottom end of the two arc-shaped plates.

[0007] Furthermore, the first buffer assembly includes a first mounting plate, which is fixedly connected between the two curved plates and is located at the top ends of the two curved plates. Two first support rods are plugged into the first mounting plate, and the ends of the two first support rods are fixedly connected to the first support seat. The first support seat is rotatably connected to the first support roller, and the surfaces of the two first support rods are sleeved with first support springs, and the two ends of the first support springs are respectively fixedly connected to the first mounting plate and the first support seat. Two first plug interfaces are provided on the first mounting plate, and the two first support rods are plugged into the two first plug interfaces. A first annular damping ring is provided in the first plug interface.

[0008] Furthermore, the second buffer assembly includes a second mounting plate, which is fixedly connected between the two arc-shaped plates and is located at the bottom end of the two arc-shaped plates. Second support rods are plugged into both ends of the top of the second mounting plate, and the tops of the two second support rods are fixedly connected to second support seats. Second support rollers are rotatably connected to both ends of the top of the second support seats. A second support spring is sleeved on the surface of the second support rod, and the two ends of the second support spring are fixedly connected to the second mounting plate and the second support seat respectively. Two second plug-in interfaces are provided on the top of the second mounting plate, and the two second support rods are plugged into the two second plug-in interfaces. A second annular damping ring is provided in the second plug-in interface.

[0009] Furthermore, a first motor is fixedly mounted on the surface of the flip bracket, and the output end of the first motor passes through the flip bracket and extends to the inside of the arc-shaped mounting groove. The output end of the first motor is fixedly connected to a first driving gear, and a tooth plate is fixedly connected between the two arc plates, and the tooth plate is engaged with the first driving gear. The tooth plate is located between the first mounting plate and the second mounting plate.

[0010] Furthermore, it also includes a fixed frame, which includes a base and multiple supporting frames, multiple supporting frames are fixedly connected to the top of the base, connecting rods are rotatably connected between the multiple supporting frames, and overlapping rods are fixedly connected between the multiple supporting frames, and the overlapping rods are located above the connecting rods. Multiple flip brackets are fixedly connected to the surface of the connecting rods, and multiple second cylinders are rotatably connected to the base, and the top ends of the piston rods of the multiple second cylinders are rotatably connected to the multiple flip brackets.

[0011] Furthermore, the left end of the connecting rod is also fixedly connected to a turning table, the top of the turning table is fixedly connected to a track, a mounting slider is slidingly provided in the track, a support plate is fixedly connected to the position on the surface of the mounting slider that extends out of the track, an internal clamping assembly is provided on the top of the support plate, an electromagnet is fixedly installed at the rear end of the track, the electromagnet passes through the track and extends to the interior of the track, and the mounting slider is a magnetic metal material.

[0012] Furthermore, the inner clamping assembly includes a clamping seat and a second motor, the clamping seat is fixedly connected to the top of the support plate, the end of the clamping seat is rotatably connected to three support shafts distributed in a circular array, the surfaces of the three support shafts are fixedly connected to a connecting frame, the end of the connecting frame is rotatably connected to a clamping roller, the surfaces of the three support shafts are fixedly connected to a follower gear, the second motor is fixedly connected to the end of the clamping seat, the output end of the second motor is fixedly connected to a second drive gear, and the second drive gear is meshed with the three follower gears.

[0013] Furthermore, the ultrasonic flaw detection assembly includes a slide rail, a movable frame is slidably provided on the slide rail, a mounting seat is slidably provided on the movable frame, a first cylinder is fixedly installed between the mounting seat and the movable frame, and two ultrasonic probes are fixedly plugged into the bottom end of the mounting seat.

[0014] In a second aspect, a method for ultrasonic flaw detection of a steel pipe comprises the following steps:

[0015] Step 1: Material collection: Place the steel pipe body in the first arc-shaped groove on the multiple flip brackets;

[0016] Step 2: Loading: First, slide the arc frame in the second arc groove, lift the top of the arc frame, and flip the multiple flip brackets. The steel pipe body rolls out of the first arc groove under the action of gravity and rolls along the guide surface into the second arc groove. The arc frame will block the steel pipe body that falls into the second arc groove to prevent the steel pipe body from rolling out of the second arc groove. Under the support of the first buffer component, the side rigid collision of the steel pipe body is buffered, and the second buffer component buffers the bottom collision of the steel pipe body.

[0017] Step 3: Ultrasonic testing: The driving roller drives the steel pipe to rotate, and the ultrasonic component is used to detect flaws on the surface of the rotating steel pipe.

[0018] Compared with the prior art, the steel pipe ultrasonic flaw detector and flaw detection method described in the present invention have the following advantages:

[0019] The present invention achieves active loading of the steel pipe body between the driving rollers by flipping the flipping bracket, and supports the steel pipe body moved to the driving rollers through the cooperation of the arc frame, the first buffer assembly and the second buffer assembly. On the one hand, it prevents the steel pipe body from detaching and restricts the steel pipe body between the driving rollers. On the other hand, it buffers the impact force of the steel pipe body, which helps to reduce rigid collisions and further helps to reduce collision damage to the steel pipe body during the loading process. Then, when multiple flipping brackets continue to flip, under the limitation of multiple second arc grooves, the steel pipe body is supported at multiple points in the extension direction, which restricts the swing of the steel pipe body and stably places the steel pipe body in the second arc groove on the driving roller, which helps to contact the steel pipe body with the driving rollers at different positions, and thus helps to avoid the collision of the steel pipe body with the driving roller due to swinging, and helps to protect the steel pipe body and the driving roller.

[0020] According to the present invention, when the first support roller is pressed at the curved bulge or bulge point of the steel pipe body, the first elastic telescopic rod will increase pressure on the detection end of the first pressure sensor, and the first pressure sensor will detect the increase in pressure. When the second support roller is pressed at the curved bulge or bulge point of the steel pipe body, the second elastic telescopic rod will increase pressure on the detection end of the second pressure sensor, and the second pressure sensor will detect the increase in pressure. According to the pressure changes detected by the first pressure sensor and the second pressure sensor, a prompt can be given to the staff, indicating that the steel pipe body has a bend or a bulge on the surface, which is beneficial for the staff to inspect the steel pipe body in time and avoid adverse effects on the accuracy of subsequent ultrasonic flaw detection.

[0021] The arc frame is slidably adjusted in the second arc groove so that the top end of the arc frame is close to the upper surface of the steel pipe body, and the steel pipe body entering the second arc groove is blocked to prevent the steel pipe body from rolling out directly from the second arc groove, which is conducive to loading the steel pipe body between the same pair of driving rollers. Then the arc frame is slid to the initial position so that the first buffer assembly contacts the side of the steel pipe body and the second buffer assembly contacts the bottom of the steel pipe body, reducing the obstruction of the upper surface of the steel pipe body, providing space for the ultrasonic flaw detection assembly to detect flaws, and avoiding the occurrence of blocking the ultrasonic flaw detection assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which constitute part of the present invention, are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 This is a method flow chart of a steel pipe ultrasonic flaw detection method according to an embodiment of the present invention;

[0024] Figure 2 This is a first overall schematic diagram of a steel pipe ultrasonic flaw detector according to an embodiment of the present invention;

[0025] Figure 3 for Figure 2 Enlarged view of part A;

[0026] Figure 4 This is a structural cross-sectional view of a flip bracket of a steel pipe ultrasonic flaw detector according to an embodiment of the present invention;

[0027] Figure 5 This is a schematic structural diagram of a turning frame of a steel pipe ultrasonic flaw detector according to an embodiment of the present invention;

[0028] Figure 6 This is a structural cross-sectional view of an arc frame, a first mounting plate, and a second mounting plate of a steel pipe ultrasonic flaw detector according to an embodiment of the present invention;

[0029] Figure 7 This is a structural schematic diagram of an arc frame of a steel pipe ultrasonic flaw detector according to an embodiment of the present invention;

[0030] Figure 8 for Figure 7 Enlarged view of part B;

[0031] Figure 9 This is a structural cross-sectional view of a track of a steel pipe ultrasonic flaw detector according to an embodiment of the present invention;

[0032] Figure 10 for Figure 9 Enlarged view of part C in the middle;

[0033] Figure 11 The figure is a schematic structural diagram of a fixing frame of a steel pipe ultrasonic flaw detector according to an embodiment of the present invention.

[0034] Description of reference numerals:

[0035] 1-support frame; 2-driving roller; 3-flipping bracket; 4-support groove; 401-first arc groove; 402-guide surface; 403-second arc groove; 5-arc frame; 501-arc plate; 6-third motor; 7-slide rail; 8-moving frame; 9-mounting seat; 10-first cylinder; 11-ultrasound probe; 12-arc mounting groove; 13-arc slide; 14-first mounting plate; 15-first support rod; 16-first support seat; 17-first support roller; 18-first support spring; 19-first plug interface; 20-first annular damping ring; 21-second mounting plate; 22-second support rod; 23-second support seat; 24-second support roller; 25-second plug interface; 26- Second annular damping ring; 27-first pressure sensor; 28-first elastic telescopic rod; 29-second elastic telescopic rod; 30-second pressure sensor; 31-first motor; 32-first drive gear; 33-tooth plate; 34-fixed frame; 3401-base; 3402-carrying frame; 3403-connecting rod; 3404-lap rod; 35-second cylinder; 36-turning table; 37-track; 38-mounting slider; 39-support plate; 40-clamping seat; 41-second motor; 42-second drive gear; 43-steel pipe body; 44-connecting rail; 45-electromagnet; 46-support shaft; 47-connecting frame; 48-clamping roller; 49-follow-up gear; 50-second support spring. DETAILED DESCRIPTION

[0036] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0037] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "first" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "first", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0038] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0039] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0040] like Figures 1 to 11 As shown, in one embodiment, a steel pipe ultrasonic flaw detector includes an ultrasonic flaw detector component, a first support component and an active feeding component, the first support component includes a plurality of support frames 1, and the plurality of support frames 1 are rotatably connected to a symmetrically arranged driving roller 2, the active feeding component is arranged between the support frames 1, the active feeding component includes a plurality of flipping frames 3, the top of the flipping frame 3 has a support groove 4, the support groove 4 includes a first arc groove 401, a guide surface 402 and a second arc groove 403, an arc frame 5 is slidably arranged in the second arc groove 403, the top of the arc frame 5 is provided with a first buffer component, and the bottom end of the arc frame 5 is provided with a second buffer component. During the flaw detection test, the steel pipe body 43 is erected between the same pair of driving rollers 2 and is located in the second arc groove 403.

[0041] Specifically, each support frame 1 is further fixedly mounted with a third motor 6, which is coaxially fixedly connected to one of the drive rollers 2 on the support frame 1. It should be understood that when the third motor 6 is started, the third motor 6 drives the drive roller 2 to rotate, thereby driving the steel tube 43 in contact with the drive roller 2 to rotate.

[0042] The ultrasonic flaw detection assembly includes a slide rail 7, on which a movable frame 8 is slidably mounted, and a mounting base 9 is slidably mounted on the movable frame 8. A first air cylinder 10 is fixedly mounted between the mounting base 9 and the movable frame 8, and two ultrasonic probes 11 are fixedly connected to the bottom end of the mounting base 9. It should be understood that during flaw detection, the movable frame 8 moves on the slide rail 7, carrying the mounting base 9, the flaw detection base, and the ultrasonic probes 11 to the top of the steel pipe body 43. The first air cylinder 10 is then activated, pushing the mounting base 9 to move, and the mounting base 9 drives the ultrasonic probes 11 on the flaw detection base close to the top of the steel pipe body 43 to perform flaw detection on the surface of the steel pipe body 43.

[0043] like Figure 1 As shown, it should be understood that the ultrasonic flaw detection method of the steel pipe body 43 includes the following steps:

[0044] Step 1: Material collection: Place the steel tube 43 in the first arc groove 401 on the plurality of flip brackets 3; before the steel tube 43 is placed in the first arc groove 401, flip the flip bracket 3 to Figure 11 state, at this time, the height of the first arc groove 401 is lower than the height of the second arc groove 403, and then the steel pipe body 43 is built into the first arc groove 401 to realize material removal.

[0045] Step 2, loading: first slide the arc frame 5 in the second arc groove 403, lift the top of the arc frame 5, and flip the multiple flip brackets 3. The steel tube body 43 rolls out from the first arc groove 401 under the action of gravity, and rolls along the guide surface 402 into the second arc groove 403. The arc frame 5 will block the steel tube body 43 that falls into the second arc groove 403 to prevent the steel tube body 43 from rolling out of the second arc groove 403, and with the support of the first buffer component, buffer the side rigid collision of the steel tube body 43, and the second buffer component buffers the bottom end collision of the steel tube body 43; flip the flip bracket 3, and Figure 11 The status in flips to Figure 2 The first arc groove 401 is higher than the second arc groove 403. When the flip bracket 3 flips, the steel tube body 43 rolls out of the first arc groove 401 and rolls along the guide surface 402 into the second arc groove 403. The first buffer assembly supports the oncoming steel tube body 43 and buffers the rigid collision force. The second buffer assembly supports the lower surface of the steel tube body 43 and buffers the rigid collision force. Since the arc frame 5 is slidably adjusted in the second arc groove 403, the top of the arc frame 5 is close to the upper surface of the steel tube body 43, and the steel tube body 43 entering the second arc groove 403 is blocked to prevent the steel tube body 43 from directly rolling out of the second arc groove 403, which is conducive to loading the steel tube body 43 between the same pair of driving rollers 2. Then, the arc frame 5 is slid to the initial position, so that the first buffer assembly contacts the side of the steel tube body 43, and the second buffer assembly contacts the bottom of the steel tube body 43. The shielding of the upper surface of the steel tube body 43 is reduced, thereby providing space for the ultrasonic flaw detection component to detect flaws and avoiding the occurrence of the situation where the ultrasonic flaw detection component is blocked.

[0046] Step 3, ultrasonic flaw detection: the driving roller 2 will drive the steel tube body 43 to rotate, and the surface of the rotating steel tube body 43 will be inspected by the ultrasonic component; after the arc frame 5 slides to the initial position, the arc frame is prevented from blocking the upper surface of the steel tube body 43, and the upper surface of the steel tube body 43 is ultrasonically inspected by the ultrasonic flaw detection component. During the ultrasonic flaw detection process, the steel tube body 43 rotates under the drive of the driving roller 2, which is conducive to the ultrasonic flaw detection component to uniformly inspect the surface of the steel tube body 43.

[0047] By flipping the flipping bracket 3, the steel tube body 43 is actively loaded between the driving rollers 2, and the steel tube body 43 moved to the driving roller 2 is supported by the cooperation of the arc frame 5, the first buffer assembly and the second buffer assembly. On the one hand, it prevents the steel tube body 43 from escaping and restricts the steel tube body 43 between the driving rollers 2. On the other hand, it buffers the impact force of the steel tube body 43, which is beneficial to reduce rigid collision and thus helps to reduce collision damage to the steel tube body 43 during the loading process. Then, when multiple flipping brackets 3 continue to flip, under the limitation of multiple second arc grooves 403, the steel tube body 43 is supported at multiple points in the extension direction, which limits the swing of the steel tube body 43 and stably places the steel tube body 43 in the second arc groove 403 on the driving roller 2, which is beneficial to contact the steel tube body 43 with the driving roller 2 at different positions, thereby avoiding the collision of the steel tube body 43 with the driving roller 2 due to swinging, and protecting the steel tube body and the driving roller.

[0048] like Figure 4 and Figure 5 As shown, in one embodiment, an arc-shaped mounting groove 12 is defined within the second arc-shaped groove 403, and two arc-shaped chutes 13 are defined within the arc-shaped mounting groove 12. The arc-shaped frame 5 includes two arc-shaped plates 501, which are slidably disposed within the two arc-shaped chutes 13, respectively. A first buffer assembly is disposed at the top ends of the two arc-shaped plates 501, and a second buffer assembly is disposed at the bottom ends of the two arc-shaped plates 501. It should be understood that the connection between the two arc-shaped plates 501 and the arc-shaped chutes 13 allows the arc-shaped frame 5 to rotate around the arc center of the second arc-shaped groove 403, adjusting the blocking posture of the arc-shaped frame 5 to adapt to the arc surface of the steel tube body 43, and raising the height of the top ends of the arc-shaped plates 501 to prevent the steel tube body 43 from escaping from the second arc-shaped groove 403.

[0049] like Figures 4 to 8 As shown, in one embodiment, the first buffer assembly includes a first mounting plate 14, which is fixedly connected between the two arc-shaped plates 501 and is located at the top of the two arc-shaped plates 501. Two first support rods 15 are inserted into the first mounting plate 14, and the ends of the two first support rods 15 are fixedly connected to the first support seat 16. The first support roller 17 is rotatably connected to the first support seat 16. First support springs 18 are sleeved on the surfaces of the two first support rods 15, and the two ends of the first support spring 18 are fixedly connected to the first mounting plate 14 and the first support seat 16 respectively. Two first plug interfaces 19 are provided on the first mounting plate 14, and the two first support rods 15 are inserted into the two first plug interfaces 19. A first annular damping ring 20 is provided in the first plug interface 19.

[0050] Specifically, a connecting rail 44 is fixedly connected between the two arc-shaped plates 501 , and the bottom end of the first support seat 16 is slidably connected to the connecting rail 44 ; by providing the connecting rail 44 , the first support seat 16 is supported.

[0051] It should be understood that when the steel tube body 43 collides with the first support roller 17, the first support roller 17 will push the first support seat 16, and the first support seat 16 will simultaneously push the first support rod 15 in the process of squeezing the first support spring 18. The first support rod 15 will be damped by the first annular damping ring 20, and the collision kinetic energy will be converted into elastic potential energy and thermal energy to achieve buffering. In the process of resetting the support of the first support spring 18, the elastic potential energy will be converted into heat energy generated by friction between the first support rod 15 and the first annular damping ring 20, thereby achieving buffering support for the steel tube body 43. On the one hand, it realizes the isolation of the steel tube body 43, and on the other hand, it buffers the collision force of the steel tube body 43, which is conducive to maintaining the stability of the steel tube body 43.

[0052] like Figures 4 to 8 As shown, in one embodiment, the second buffer assembly includes a second mounting plate 21, which is fixedly connected between the two arc-shaped plates 501 and is located at the bottom end of the two arc-shaped plates 501. Second support rods 22 are inserted at both ends of the top of the second mounting plate 21, and second support seats 23 are fixedly connected to the tops of the two second support rods 22. Second support rollers 24 are rotatably connected at both ends of the top of the second support seats 23. A second support spring 50 is sleeved on the surface of the second support rod 22, and the two ends of the second support spring 50 are fixedly connected to the second mounting plate 21 and the second support seat 23 respectively. Two second plug interfaces 25 are opened on the top of the second mounting plate 21, and the two second support rods 22 are inserted in the two second plug interfaces 25. A second annular damping ring 26 is provided in the second plug interface 25. When the steel tube body 43 collides with the second support roller 24, the second support roller 24 will push the second support seat 23, and the second support seat 23 will synchronously push the second support rod 22 in the process of squeezing the second support spring 50. The second support rod 22 will be damped by the second annular damping ring 26, and the collision kinetic energy will be converted into elastic potential energy and thermal energy to achieve buffering. In the process of resetting the support of the second support spring 50, the elastic potential energy will be converted into heat energy generated by friction between the second support rod 22 and the second annular damping ring 26, thereby achieving buffering support for the steel tube body 43. On the one hand, it achieves support for the steel tube body 43, and on the other hand, it buffers the collision force of the steel tube body 43, which is conducive to maintaining the stability of the steel tube body 43.

[0053] Specifically, a first pressure sensor 27 is fixedly mounted on the first mounting plate 14, a first elastic telescopic rod 28 is fixedly mounted on the first support seat 16, and the end of the first elastic telescopic rod 28 contacts the detection end of the first pressure sensor 27, a second pressure sensor 30 is fixedly mounted on the top of the second mounting plate 21, and a second elastic telescopic rod 29 is fixedly mounted on the second support seat 23, and the end of the second elastic telescopic rod 29 contacts the detection end of the second pressure sensor 30. It should be understood that after the steel tube body 43 is loaded between the driving rollers 2, the first supporting roller 17 and the second supporting roller 24 will always be in contact with the surface of the steel tube body 43. When the driving roller 2 drives the steel tube body 43 to rotate, if the position where the steel tube body 43 contacts the first supporting roller 17 and the second supporting roller 24 has a curved protrusion or a raised point, the steel tube body 43 will press the first supporting roller 17 and the second supporting roller 24. When the curved protrusion or the raised point of the steel tube body 43 presses the first supporting roller 17, the first elastic telescopic rod 28 will increase the pressure on the detection end of the first pressure sensor 27. The pressure sensor 27 will detect the increase in pressure. When the curved bulge or bulge point of the steel tube body 43 presses against the second support roller 24, the second elastic telescopic rod 29 will increase the pressure on the detection end of the second pressure sensor 30. The second pressure sensor 30 will detect the increase in pressure. According to the pressure changes detected by the first pressure sensor 27 and the second pressure sensor 30, a prompt can be given to the staff to indicate that the steel tube body 43 is bent or has a bulge on the surface, which is conducive to the staff to inspect the steel tube body 43 in time to avoid adverse effects on the accuracy of subsequent ultrasonic testing.

[0054] like Figures 4 to 7 As shown, in one embodiment, a first motor 31 is fixedly mounted on the surface of the flip bracket 3. The output end of the first motor 31 passes through the flip bracket 3 and extends into the interior of the arc-shaped mounting groove 12. The output end of the first motor 31 is fixedly connected to the first drive gear 32. A toothed plate 33 is fixedly connected between the two arc-shaped plates 501. The toothed plate 33 meshes with the first drive gear 32. The toothed plate 33 is located between the first mounting plate 14 and the second mounting plate 21. It should be understood that when the arc-shaped frame 5 needs to be slidably adjusted at the first arc-shaped groove 401, the first motor 31 is started, the first motor 31 drives the first drive gear 32 to rotate, the first drive gear 32 drives the toothed plate 33, and the toothed plate 33 synchronously drives the arc-shaped frame 5 to move within the arc-shaped mounting groove 12, thereby raising the height of the first support roller 17 and increasing the blocking range of the steel tube body 43.

[0055] like Figure 1 and Figure 11As shown, in one embodiment, a fixed frame 34 is further included. The fixed frame 34 includes a base 3401 and a plurality of supporting frames 3402. The plurality of supporting frames 3402 are fixedly connected to the top of the base 3401. A connecting rod 3403 is rotatably connected between the plurality of supporting frames 3402. A bridging rod 3404 is fixedly connected between the plurality of supporting frames 3402. The bridging rod 3404 is located above the connecting rod 3403. A plurality of flip brackets 3 are fixedly connected to the surface of the connecting rod 3403. A plurality of second cylinders 35 are rotatably connected to the base 3401. The piston rod tops of the plurality of second cylinders 35 are rotatably connected to the plurality of flip brackets 3. It should be understood that by activating the second cylinders 35, the second cylinders 35 push the flip bracket 3, thereby lowering the first arcuate slot 401 on the flip bracket 3 and raising the second arcuate slot 403. After the second cylinder 35 pulls the flip bracket 3, the first arcuate slot 401 is raised and the second arcuate slot 403 is lowered, thereby achieving flip adjustment of the flip bracket 3.

[0056] like Figure 1 、 Figure 9 、 Figure 10 and Figure 11 As shown, in one embodiment, the left end of the connecting rod 3403 is also fixedly connected to the flip table 36, the top of the flip table 36 is fixedly connected to the track 37, the inner sliding of the track 37 is provided with a mounting slider 38, the position on the surface of the mounting slider 38 that extends out of the track 37 is fixedly connected to a support plate 39, the top of the support plate 39 is provided with an internal clamping assembly, the rear end of the track 37 is fixedly installed with an electromagnet 45, the electromagnet 45 passes through the track 37 and extends to the interior of the track 37, and the mounting slider 38 is made of magnetic metal material.

[0057] The inner clamping assembly includes a clamping seat 40 and a second motor 41. The clamping seat 40 is fixedly connected to the top of the support plate 39. The end of the clamping seat 40 is rotatably connected to three support shafts 46 distributed in a circular array. The surfaces of the three support shafts 46 are fixedly connected to a connecting frame 47. The end of the connecting frame 47 is rotatably connected to a clamping roller 48. The surfaces of the three support shafts 46 are fixedly connected to a follower gear 49. The second motor 41 is fixedly connected to the end of the clamping seat 40. The output end of the second motor 41 is fixedly connected to a second drive gear 42. The second drive gear 42 is meshed with the three follower gears 49.

[0058] It should be understood that the electromagnet 45 is de-energized, and then the flip table 36 and the flip bracket 3 are flipped synchronously, so that the first arc groove 401 is lower than the second arc groove 403. Under the action of gravity, the installation slider 38 will slide to the front end, and the inner clamping assembly will move to the front end of the track 37, so that the steel tube body 43 is placed in the first arc groove 401 of the flip bracket 3. Then, the steel tube body 43 is pushed, and the opening at the end of the steel tube body 43 is aligned with the inner clamping assembly. The inner clamping assembly clamps the end of the steel tube body 43 to achieve support for the end of the steel tube body 43.

[0059] During the loading process, the flip bracket 3 flips over. When the first arc groove 401 is higher than the second arc groove 403, the steel tube body 43, the inner clamping assembly, the mounting slide 38 and the support plate 39 move synchronously. The steel tube body 43 moves from the first arc groove 401 to the second arc groove 403 until the steel tube body 43 is placed between the driving rollers 2. At this time, the mounting slide 38 moves from the front end of the track 37 to the rear end of the track 37, and the electromagnet 45 is energized. The electromagnet 45 magnetically positions the mounting slide 38, and the inner clamping assembly clamps and positions the end of the steel tube body 43.

[0060] The specific clamping method of the inner clamping assembly is: start the second motor 41, the second motor 41 drives the second drive gear 42 to rotate, the second drive gear 42 synchronously drives the three follower gears 49, the three follower gears 49 drive the three support shafts 46 to rotate, the three support shafts 46 synchronously drive the three connecting frames 47 to flip, and the three connecting frames 47 drive the three clamping rollers 48 to flip until the clamping rollers 48 are pressed against the inner wall of the steel tube body 43 to achieve clamping, preventing the steel tube body 43 from moving along the extension direction of the steel tube body 43, and through the support of the clamping rollers 48, the steel tube body 43 can maintain the freedom of rotation.

[0061] Before flaw detection, when it is necessary to detect the raised points or the bending state of the steel tube body 43 , the clamping of the inner clamping assembly can be canceled to maintain the freedom of the steel tube body 43 between the driving rollers 2 .

[0062] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A steel pipe ultrasonic flaw detector, comprising an ultrasonic flaw detector assembly, characterized in that: It also includes a first support assembly, an active feeding assembly and a fixed frame (34), wherein the first support assembly includes a plurality of support frames (1), each of the plurality of support frames (1) is rotatably connected to a symmetrically arranged driving roller (2), the active feeding assembly is arranged between the support frames (1), the active feeding assembly includes a plurality of flipping brackets (3), the top of the flipping bracket (3) has a supporting groove (4), the supporting groove (4) includes a first arc groove (401), a guide surface (402) and a second arc groove (403), an arc frame (5) is slidingly arranged in the second arc groove (403), the top of the arc frame (5) is provided with a first buffer assembly, and the bottom of the arc frame (5) is provided with a second buffer assembly. During the flaw detection test, the steel pipe body (43) is placed between the same pair of driving rollers (2) and is located in the second arc groove (403). By flipping the flipping bracket (3), the steel pipe body (43) is actively fed to between the driving rollers (2); The fixing frame (34) includes a base (3401) and a plurality of supporting frames (3402), the plurality of supporting frames (3402) are fixedly connected to the top of the base (3401), a connecting rod (3403) is rotatably connected between the plurality of supporting frames (3402), a lap rod (3404) is fixedly connected between the plurality of supporting frames (3402), the lap rod (3404) is located above the connecting rod (3403), the plurality of flip brackets (3) are fixedly connected to the surface of the connecting rod (3403), the base (3401) is rotatably connected to a plurality of second cylinders (35), and the piston rod tops of the plurality of second cylinders (35) are rotatably connected to the plurality of flip brackets (3). The left end of the connecting rod (3403) is also fixedly connected to a turning table (36), and the top of the turning table (36) is fixedly connected to a track (37). A mounting slider (38) is slidably provided in the track (37). A support plate (39) is fixedly connected to the position of the surface of the mounting slider (38) extending out of the track (37). The top of the support plate (39) is provided with an internal clamping assembly. An electromagnet (45) is fixedly installed at the rear end of the track (37). The electromagnet (45) passes through the track (37) and extends to the inside of the track (37). The mounting slider (38) is made of a magnetic metal material and clamps the end of the steel tube body (43) through the internal clamping assembly to achieve support for the end of the steel tube body (43).

2. The steel pipe ultrasonic flaw detector according to claim 1, characterized in that: An arc-shaped mounting groove (12) is provided in the second arc-shaped groove (403), and two arc-shaped sliding grooves (13) are provided in the arc-shaped mounting groove (12). The arc-shaped frame (5) includes two arc-shaped plates (501), and the two arc-shaped plates (501) are respectively slidably provided in the two arc-shaped sliding grooves (13). The first buffer component is provided at the top ends of the two arc-shaped plates (501), and the second buffer component is provided at the bottom ends of the two arc-shaped plates (501).

3. The steel pipe ultrasonic flaw detector according to claim 2, characterized in that: The first buffer assembly includes a first mounting plate (14), the first mounting plate (14) is fixedly connected between the two arc-shaped plates (501) and is located at the top ends of the two arc-shaped plates (501), two first support rods (15) are plugged into the first mounting plate (14), the ends of the two first support rods (15) are fixedly connected to the first support seat (16), the first support seat (16) is rotatably connected to the first support roller (17), the surfaces of the two first support rods (15) are sleeved with first support springs (18), the two ends of the first support springs (18) are fixedly connected to the first mounting plate (14) and the first support seat (16), two first plug interfaces (19) are provided on the first mounting plate (14), the two first support rods (15) are plugged into the two first plug interfaces (19), and a first annular damping ring (20) is provided in the first plug interface (19).

4. The steel pipe ultrasonic flaw detector according to claim 3, characterized in that: The second buffer assembly includes a second mounting plate (21), the second mounting plate (21) is fixedly connected between the two arc-shaped plates (501) and is located at the bottom end of the two arc-shaped plates (501), the two ends of the top of the second mounting plate (21) are plugged with second support rods (22), the tops of the two second support rods (22) are fixedly connected with second support seats (23), the two ends of the top of the second support seats (23) are rotatably connected with second support rollers (24), a second support spring (50) is sleeved on the surface of the second support rod (22), the two ends of the second support spring (50) are fixedly connected to the second mounting plate (21) and the second support seat (23), two second plug interfaces (25) are provided on the top of the second mounting plate (21), the two second support rods (22) are plugged into the two second plug interfaces (25), and a second annular damping ring (26) is provided in the second plug interface (25).

5. The steel pipe ultrasonic flaw detector according to claim 4, characterized in that: A first motor (31) is fixedly mounted on the surface of the flip bracket (3), and an output end of the first motor (31) extends through the flip bracket (3) and into the interior of the arc-shaped mounting groove (12). The output end of the first motor (31) is fixedly connected to a first driving gear (32). A tooth plate (33) is fixedly connected between the two arc-shaped plates (501), and the tooth plate (33) is meshed with the first driving gear (32). The tooth plate (33) is located between the first mounting plate (14) and the second mounting plate (21).

6. The steel pipe ultrasonic flaw detector according to claim 1, characterized in that: The inner clamping assembly includes a clamping seat (40) and a second motor (41), wherein the clamping seat (40) is fixedly connected to the top end of the support plate (39), and the end of the clamping seat (40) is rotatably connected to three support shafts (46) distributed in a ring array, and the surfaces of the three support shafts (46) are fixedly connected to a connecting frame (47), and the end of the connecting frame (47) is rotatably connected to a clamping roller (48), and the surfaces of the three support shafts (46) are fixedly connected to a follower gear (49), and the second motor (41) is fixedly connected to the end of the clamping seat (40), and the output end of the second motor (41) is fixedly connected to a second drive gear (42), and the second drive gear (42) is meshed with the three follower gears (49).

7. The steel pipe ultrasonic flaw detector according to claim 6, characterized in that: The ultrasonic flaw detection assembly comprises a slide rail (7), a movable frame (8) is slidably provided on the slide rail (7), a mounting seat (9) is slidably provided on the movable frame (8), a first cylinder (10) is fixedly installed between the mounting seat (9) and the movable frame (8), and two ultrasonic probes (11) are fixedly plugged into the bottom end of the mounting seat (9).

8. A steel pipe ultrasonic flaw detection method, applicable to the steel pipe ultrasonic flaw detector according to claim 1, characterized in that: The following steps are involved: Step 1: Material collection: placing the steel tube body (43) in the first arc-shaped groove (401) on the plurality of flip brackets (3); Step 2, loading: first slide the arc frame (5) in the second arc groove (403), lift the top of the arc frame (5), and flip the multiple flip brackets (3). The steel tube body (43) rolls out from the first arc groove (401) under the action of gravity and rolls along the guide surface (402) into the second arc groove (403). The arc frame (5) blocks the steel tube body (43) that falls into the second arc groove (403) to prevent the steel tube body (43) from rolling out of the second arc groove (403). Under the support of the first buffer component, the side rigid collision of the steel tube body (43) is buffered, and the second buffer component buffers the bottom collision of the steel tube body (43); Step 3: Ultrasonic flaw detection: The driving roller (2) drives the steel tube body (43) to rotate, and the surface of the rotating steel tube body (43) is detected by the ultrasonic component.

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