A steel pipe defect detection device

Abstract

The application provides a steel pipe defect detection device, and relates to the technical field of steel pipe detection; the device comprises a steel pipe placing rack, a clamping and rotating mechanism and an ultrasonic flaw detection mechanism are arranged on the steel pipe placing rack, the clamping and rotating mechanism is used for clamping or loosening the steel pipe placed on the steel pipe placing rack and can drive the clamped steel pipe to rotate around its own axis, the ultrasonic flaw detection mechanism is arranged beside the clamping and rotating mechanism, the ultrasonic flaw detection mechanism can move along the length direction of the steel pipe, the detection end of the ultrasonic flaw detection mechanism faces the outer circumferential surface of the steel pipe clamped by the clamping and rotating mechanism, and the ultrasonic flaw detection mechanism is used for detecting the circumferential surface of the steel pipe during the rotation of the steel pipe; the clamping and rotating mechanism is used for realizing the stable clamping and circumferential rotation of the steel pipe, the ultrasonic flaw detection mechanism can move along the length direction of the steel pipe, manual holding of the probe or adjustment of the position of the steel pipe is not needed, the detection of the circumferential surface and the full length of the steel pipe can be automatically completed, the labor intensity is effectively reduced, and the detection efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of steel pipe inspection technology, and more specifically, to a steel pipe defect detection device. Background Technology

[0002] In the field of steel pipe production and application, ultrasonic testing technology has become one of the core technical means to ensure the quality of steel pipe products and the safety of subsequent use because it can effectively detect defects such as cracks, pores and slag inclusions inside steel pipes.

[0003] In small and medium-sized steel pipe manufacturing enterprises, manual flaw detection is still a common inspection method in some scenarios. It mainly relies on inspectors holding an ultrasonic probe, moving it segment by segment along the surface of the steel pipe, and observing the instrument signals to determine defects. However, manual flaw detection is not only inefficient, but also requires personnel to maintain a fixed posture or move around the steel pipe for a long time, resulting in high labor intensity. Summary of the Invention

[0004] The purpose of this application is to provide a steel pipe defect detection device that can solve the technical problems mentioned in the background art.

[0005] This application provides a steel pipe defect detection device, including a steel pipe placement rack. The steel pipe placement rack is equipped with a clamping and rotating mechanism and an ultrasonic flaw detection mechanism. The clamping and rotating mechanism is used to clamp or release the steel pipe placed on the steel pipe placement rack and can drive the clamped steel pipe to rotate around its own axis. The ultrasonic flaw detection mechanism is located beside the clamping and rotating mechanism and can move along the length of the steel pipe. The detection end of the ultrasonic flaw detection mechanism faces the outer circumferential surface of the steel pipe clamped by the clamping and rotating mechanism, and is used to perform full-circumferential ultrasonic detection on the steel pipe during rotation.

[0006] Furthermore, the steel pipe placement rack is provided with two steel pipe placement components spaced apart. The top of the steel pipe placement component is provided with a V-shaped placement opening. The steel pipe placement rack is provided with a sliding groove that matches the bottom of the steel pipe placement component. The steel pipe placement component is slidably connected to the sliding groove.

[0007] Furthermore, the clamping and rotating mechanism includes a dual-axis motor, two screws, two sliders, two sets of lifting components, two conical clamping members, and two drive motors. The output shafts at both ends of the dual-axis motor are respectively connected to the two screws and drive them to rotate synchronously in opposite directions. The two sliders are respectively threadedly connected to the two screws and move towards or away from each other as the screws rotate. The two sets of lifting components are respectively disposed on the two sliders. The two conical clamping members are respectively disposed on the output ends of the two sets of lifting components, and the conical tips of the two conical clamping members are arranged opposite each other. The two drive motors are respectively connected to the two conical clamping members for driving the conical clamping members to rotate around their own axes.

[0008] Furthermore, the lifting assembly includes an electric cylinder and a mounting base. The cylinder body of the electric cylinder is fixedly mounted on the slider, and the mounting base is fixedly mounted on the piston rod end of the electric cylinder. The tapered clamping member has a connecting shaft at one end away from its tapered tip. The connecting shaft is rotatably mounted on the mounting base via a bearing seat. The body of the drive motor is fixedly mounted on the mounting base, and the output shaft of the drive motor is connected to the end of the connecting shaft away from the tapered clamping member.

[0009] Furthermore, a set of guide rods are symmetrically fixed at the bottom of the mounting base, and the slider is provided with guide holes that are adapted to the guide rods. The end of the guide rod away from the mounting base is movably inserted into the guide hole.

[0010] Furthermore, a rubber pad is affixed to the inner side of the V-shaped placement opening of the steel pipe placement component.

[0011] Furthermore, the ultrasonic flaw detection mechanism includes a linear module, a movable base, a vertical telescopic adjustment assembly, a horizontal telescopic adjustment assembly, and an ultrasonic probe. The linear module is fixed on the steel pipe placement frame, and the extension direction of the linear module is parallel to the length direction of the steel pipe. The movable base is fixed on the slide of the linear module. The vertical telescopic adjustment assembly is fixed on the movable base. The horizontal telescopic adjustment assembly is located on the vertical telescopic adjustment assembly. The ultrasonic probe is located on the horizontal telescopic adjustment assembly.

[0012] Furthermore, the vertical telescopic adjustment assembly includes a lifting seat and two vertical electric telescopic rods. The fixed ends of the two vertical electric telescopic rods are fixed to the movable seat, the lifting seat is fixed to the telescopic ends of the two vertical electric telescopic rods, and the horizontal telescopic adjustment assembly is located on the lifting seat.

[0013] Furthermore, the horizontal telescopic adjustment assembly includes a horizontal electric telescopic rod and a connecting seat. The horizontal electric telescopic rod is fixed on the movable seat, and the connecting seat is fixed on the telescopic end of the horizontal electric telescopic rod. The ultrasonic probe is detachably mounted on the connecting seat.

[0014] The beneficial effects of this utility model are:

[0015] This invention achieves stable clamping and circumferential rotation of the steel pipe through a clamping and rotating mechanism. Combined with an ultrasonic flaw detection mechanism that can move along the length of the steel pipe, it can automatically complete the full circumference and full length inspection of the steel pipe without the need for manual handling of the probe or adjustment of the steel pipe position. This effectively reduces manual labor intensity and improves inspection efficiency. At the same time, the compact layout of the mechanism can adapt to the inspection needs of steel pipes of different lengths, enhancing the practicality of the device and the reliability of the inspection results. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 These are schematic diagrams of structures in some embodiments of this application;

[0018] Figure 2 This is a right view in some embodiments of this application;

[0019] The reference numerals in the attached figures are as follows:

[0020] 1. Steel pipe placement rack; 11. Sliding groove; 12. Steel pipe placement component; 121. Clearance hole; 2. Clamping and rotating mechanism; 21. Dual-axis motor; 22. Screw; 23. Slider; 24. Lifting assembly; 241. Electric cylinder; 242. Mounting base; 25. Conical clamping component; 251. Connecting shaft; 26. Drive motor; 3. Ultrasonic flaw detection mechanism; 31. Linear module; 32. Moving base; 33. Vertical telescopic adjustment assembly; 331. Lifting base; 332. Vertical electric telescopic rod; 34. Horizontal telescopic adjustment assembly; 341. Horizontal electric telescopic rod; 342. Connecting base; 35. Ultrasonic probe; 4. Bearing seat; 5. Guide rod; 6. Rubber pad. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0024] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0025] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0026] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Specific Implementation

[0027] like Figure 1and Figure 2 As shown, this application provides a steel pipe defect detection device, including a steel pipe placement rack 1, on which a clamping and rotating mechanism 2 and an ultrasonic flaw detection mechanism 3 are provided. The clamping and rotating mechanism 2 is used to clamp or release the steel pipe placed on the steel pipe placement rack 1, and can drive the clamped steel pipe to rotate around its own axis. The ultrasonic flaw detection mechanism 3 is disposed beside the clamping and rotating mechanism 2, and can move along the length direction of the steel pipe. The detection end of the ultrasonic flaw detection mechanism 3 faces the outer circumferential surface of the steel pipe clamped by the clamping and rotating mechanism 2, and is used to perform full-circumferential ultrasonic detection on the steel pipe during rotation. In use, the steel pipe to be tested is carried by the steel pipe placement rack 1, and the clamping and rotating mechanism 2 clamps and fixes the steel pipe and drives it to rotate around its own axis. The rotation of its own axis creates a continuous circumferential exposure of the outer surface of the steel pipe. Simultaneously, the ultrasonic flaw detection mechanism 3 moves along the length of the steel pipe, with its detection end continuously facing the rotating outer surface of the steel pipe. Through the synergistic effect of the steel pipe's rotation and the axial movement of the flaw detection mechanism, continuous ultrasonic scanning detection of the entire circumference and length of the steel pipe is achieved, thus completing the detection of surface and internal defects. Compared with existing technologies, this method eliminates the need for manual probe handling or adjustment of the steel pipe's position, automatically completing the detection of the entire circumference and length of the steel pipe. This effectively reduces manual labor intensity and improves detection efficiency. Furthermore, the compact layout of the mechanism adapts to the detection needs of steel pipes of different lengths, enhancing the practicality of the device and the reliability of the detection results.

[0028] like Figure 1 As shown, two steel pipe placement components 12 are spaced apart on the steel pipe placement rack 1. The top of the steel pipe placement component 12 is provided with a V-shaped placement opening. The steel pipe placement rack 1 is provided with a sliding groove 11 that matches the bottom of the steel pipe placement component 12. The steel pipe placement component 12 is slidably connected to the sliding groove 11. In use, the distance between the two steel pipe placement components 12 can be adjusted by pushing the steel pipe placement component 12 along the extension direction of the sliding groove 11 to accommodate steel pipes of different lengths and diameters to be tested.

[0029] like Figure 1As shown, the clamping and rotating mechanism 2 includes a dual-axis motor 21, two screws 22, two sliders 23, two sets of lifting components 24, two conical clamping members 25, and two drive motors 26. The output shafts at both ends of the dual-axis motor 21 are respectively connected to the two screws 22 one-to-one and drive them to rotate synchronously in opposite directions. The two sliders 23 are respectively threadedly connected to the two screws 22 and move in a direction that approaches or moves away from each other as the screws 22 rotate. Specifically, the sliders 23 are provided with threads adapted to the screws 22. A through hole is provided, through which the screw 22 passes and is threadedly connected to the slider 23. Two sets of lifting components 24 are correspondingly arranged on the two sliders 23. Two conical clamping members 25 are correspondingly arranged at the output ends of the two sets of lifting components 24, with the conical tips of the two conical clamping members 25 facing each other. Two drive motors 26 are correspondingly connected to the two conical clamping members 25 to drive the conical clamping members 25 to rotate around their own axes. Specifically, the sliding joint of the steel pipe placement part 12 is provided with The clearance hole 121 is located between the two steel pipe placement parts 12. The screw 22 passes through the clearance hole 121 of the sliding joint. The lower part of the slider 23 is slidably connected to the sliding groove 11. The end of the screw 22 away from the dual-axis motor 21 is rotatably connected to the steel pipe placement frame 1 through a bearing. By driving the screw 22 to rotate synchronously in opposite directions through the dual-axis motor 21, and cooperating with the sliding groove 11 to limit the slider 23, the two conical clamping parts 25 can be precisely and synchronously moved closer or further apart, ensuring the centering and clamping of the steel pipe. The conical clamping member 25 can adapt to steel pipes with different inner diameters, and the lifting component 24 can adjust the clamping height to further improve the adaptability to steel pipes of various specifications. The two drive motors 26 drive the corresponding conical clamping members 25 to rotate in the same direction, which can stably drive the clamped steel pipe to rotate, providing a reliable guarantee for the ultrasonic flaw detection mechanism 3 to realize full circumferential inspection of the steel pipe. The surface of the conical clamping member 25 is covered with a rubber layer to avoid rigid contact with the steel pipe to be inspected and thus avoid damage to the steel pipe to be inspected.

[0030] like Figure 1 As shown, the lifting assembly 24 includes an electric cylinder 241 and a mounting base 242. The cylinder body of the electric cylinder 241 is fixedly mounted on the slider 23, and the mounting base 242 is fixedly mounted on the piston rod end of the electric cylinder 241. The end of the conical clamping member 25 away from its conical tip is provided with a connecting shaft 251. The connecting shaft 251 is rotatably mounted on the mounting base 242 through a bearing seat 4. The body of the drive motor 26 is fixedly mounted on the mounting base 242, and the output shaft of the drive motor 26 is connected to the end of the connecting shaft 251 away from the conical clamping member 25. The electric cylinder 241 drives the mounting base 242 to move up and down, thereby driving the conical clamping member 25 to move up and down, so as to realize the height adjustment of the conical clamping member 25.

[0031] like Figure 1As shown, a set of guide rods 5 are symmetrically fixed at the bottom of the mounting base 242. The slider 23 is provided with guide holes that are compatible with the guide rods 5. The end of the guide rod 5 away from the mounting base 242 is movably inserted into the guide hole. When the electric cylinder 241 of the lifting assembly 24 drives the piston rod to extend and retract, causing the mounting base 242 to rise and fall in the vertical direction, the guide rod 5 will slide synchronously along the axial direction of the guide hole. Through the cooperation structure between the guide rod 5 and the guide hole, the lifting trajectory of the mounting base 242 can be effectively constrained, ensuring the stable lifting of the mounting base 242.

[0032] like Figure 1 As shown, a rubber pad 6 is attached to the inner side of the V-shaped placement opening of the steel pipe placement component 12. The rubber pad 6 can buffer the impact when the steel pipe is placed through elastic contact, avoiding scratches or bumps caused by hard contact between the metal surface of the steel pipe and the steel pipe placement component 12, thus protecting the appearance quality of the steel pipe. Specifically, when the clamping and rotating mechanism 2 clamps and rotates the steel pipe, the steel pipe to be tested is first placed on the steel pipe placement component 12. Then, the lifting component 24 adjusts the conical clamping component 25 to a suitable height. The dual-axis motor 21 then drives the screw 22 to move the slider 23 closer to each other, so that the two conical clamping components 25 clamp the end of the steel pipe. Then, the lifting component 24 continues to drive the conical clamping component 25 to move upward, so that the steel pipe to be tested is moved above the steel pipe placement component 12. The drive motor 26 then drives the connecting shaft 251 to rotate the conical clamping component 25, thereby driving the steel pipe to be tested to rotate. This can avoid damage caused by the surface of the steel pipe to be tested contacting and rubbing against the rubber pad 6 on the steel pipe placement component 12 during the testing process.

[0033] like Figure 1 and Figure 2As shown, the ultrasonic flaw detection mechanism 3 includes a linear module 31, a movable base 32, a vertical telescopic adjustment component 33, a horizontal telescopic adjustment component 34, and an ultrasonic probe 35. The linear module 31 is fixed on the steel pipe mounting frame 1, and the extension direction of the linear module 31 is parallel to the length direction of the steel pipe. The movable base 32 is fixed on the slide of the linear module 31. The vertical telescopic adjustment component 33 is fixed on the movable base 32, the horizontal telescopic adjustment component 34 is mounted on the vertical telescopic adjustment component 33, and the ultrasonic probe 35 is mounted on the horizontal telescopic adjustment component 34. When the ultrasonic flaw detection mechanism 3 is working, the linear module 31 drives its slide to move the movable base 32 and the vertical telescopic adjustment component 33 and the horizontal telescopic adjustment component 34 mounted on it. The adjusting component 34 and the ultrasonic probe 35 move synchronously along the axial direction of the steel pipe. The vertical telescopic adjusting component 33 can extend and retract in the vertical direction to adjust the vertical height of the horizontal telescopic adjusting component 34 and the ultrasonic probe 35 to adapt to the height of the outer circumference of steel pipes of different diameters. The horizontal telescopic adjusting component 34 can extend and retract in a direction perpendicular to the axis of the steel pipe to push the ultrasonic probe 35 closer to or further away from the outer circumference of the steel pipe, ensuring that the probe and the surface of the steel pipe maintain a distance (or fit) that meets the detection requirements. With the cooperation of the clamping and rotating mechanism 2 driving the steel pipe to rotate around its own axis, the ultrasonic probe 35 achieves continuous ultrasonic scanning detection of the entire circumference and length range of the steel pipe through the synergy of axial movement and circumferential rotation of the steel pipe.

[0034] like Figure 1 and Figure 2 As shown, the vertical telescopic adjustment assembly 33 includes a lifting seat 331 and two vertical electric telescopic rods 332. The fixed ends of the two vertical electric telescopic rods 332 are fixed on the movable seat 32, and the lifting seat 331 is fixed on the telescopic ends of the two vertical electric telescopic rods 332. The horizontal telescopic adjustment assembly 34 is located on the lifting seat 331. The lifting seat 331 is raised and lowered by the synchronous extension and retraction of the two vertical electric telescopic rods 332, avoiding the tilting or shaking that may occur with single-rod drive.

[0035] like Figure 1 and Figure 2 As shown, the horizontal telescopic adjustment assembly 34 includes a horizontal electric telescopic rod 341 and a connecting seat 342. The horizontal electric telescopic rod 341 is fixed on the movable seat 32, and the connecting seat 342 is fixed on the telescopic end of the horizontal electric telescopic rod 341. The ultrasonic probe 35 is detachably mounted on the connecting seat 342. Specifically, the ultrasonic probe 35 is connected to the connecting seat 342 by bolts and nuts, so that the ultrasonic probe 35 can be replaced and maintained. The telescopic rod's extension and retraction cause the connecting seat 342 and the ultrasonic probe 35 mounted on the connecting seat 342 to move synchronously closer to or away from the outer circumference of the steel pipe.

[0036] Among them, the dual-axis motor 21, drive motor 26, electric cylinder 241, linear module 31, vertical electric telescopic rod 332, and horizontal electric telescopic rod 341 are electrically connected to the controller, and the ultrasonic probe 35 is electrically connected to the ultrasonic detector.

[0037] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A steel pipe defect detection device, characterized in that: The device includes a steel pipe placement rack, which is equipped with a clamping and rotating mechanism and an ultrasonic flaw detection mechanism. The clamping and rotating mechanism is used to clamp or release the steel pipes placed on the steel pipe placement rack and can drive the clamped steel pipes to rotate around their own axis. The ultrasonic flaw detection mechanism is located beside the clamping and rotating mechanism and can move along the length of the steel pipe. The detection end of the ultrasonic flaw detection mechanism faces the outer circumferential surface of the steel pipe clamped by the clamping and rotating mechanism, and is used to perform full-circumferential ultrasonic testing on the steel pipe during rotation.

2. The steel pipe defect detection device according to claim 1, characterized in that: The steel pipe placement rack has two steel pipe placement components spaced apart. The top of each steel pipe placement component has a V-shaped placement opening. The steel pipe placement rack has a sliding groove that matches the bottom of each steel pipe placement component. The steel pipe placement component is slidably connected to the sliding groove.

3. The steel pipe defect detection device according to claim 1, characterized in that: The clamping and rotating mechanism includes a dual-axis motor, two screws, two sliders, two sets of lifting components, two conical clamping members, and two drive motors. The output shafts at both ends of the dual-axis motor are respectively connected to the two screws and drive them to rotate synchronously in opposite directions. The two sliders are respectively threaded to the two screws and move towards or away from each other as the screws rotate. The two sets of lifting components are respectively disposed on the two sliders. The two conical clamping members are respectively disposed on the output ends of the two sets of lifting components, and the conical tips of the two conical clamping members are arranged opposite each other. The two drive motors are respectively connected to the two conical clamping members for driving the conical clamping members to rotate around their own axes.

4. The steel pipe defect detection device according to claim 3, characterized in that: The lifting assembly includes an electric cylinder and a mounting base. The cylinder body of the electric cylinder is fixedly mounted on the slider. The mounting base is fixedly mounted on the piston rod end of the electric cylinder. The tapered clamping member has a connecting shaft at one end away from its tapered tip. The connecting shaft is rotatably mounted on the mounting base via a bearing seat. The body of the drive motor is fixedly mounted on the mounting base. The output shaft of the drive motor is connected to the end of the connecting shaft away from the tapered clamping member.

5. A steel pipe defect detection device according to claim 4, characterized in that: A set of guide rods are symmetrically fixed at the bottom of the mounting base. The slider is provided with guide holes that are adapted to the guide rods. The end of the guide rod away from the mounting base is movably inserted into the guide hole.

6. The steel pipe defect detection device according to claim 2, characterized in that: A rubber pad is attached to the inside of the V-shaped placement opening of the steel pipe placement component.

7. The steel pipe defect detection device according to claim 1, characterized in that: The ultrasonic flaw detection mechanism includes a linear module, a movable base, a vertical telescopic adjustment assembly, a horizontal telescopic adjustment assembly, and an ultrasonic probe. The linear module is fixed on the steel pipe placement frame, and the extension direction of the linear module is parallel to the length direction of the steel pipe. The movable base is fixed on the slide of the linear module. The vertical telescopic adjustment assembly is fixed on the movable base. The horizontal telescopic adjustment assembly is located on the vertical telescopic adjustment assembly. The ultrasonic probe is located on the horizontal telescopic adjustment assembly.

8. A steel pipe defect detection device according to claim 7, characterized in that: The vertical telescopic adjustment assembly includes a lifting base and two vertical electric telescopic rods. The fixed ends of the two vertical electric telescopic rods are fixed on the movable base, and the lifting base is fixed on the telescopic ends of the two vertical electric telescopic rods. The horizontal telescopic adjustment assembly is located on the lifting base.

9. A steel pipe defect detection device according to claim 8, characterized in that: The horizontal telescopic adjustment assembly includes a horizontal electric telescopic rod and a connecting seat. The horizontal electric telescopic rod is fixed on the movable seat, and the connecting seat is fixed on the telescopic end of the horizontal electric telescopic rod. The ultrasonic probe is detachably mounted on the connecting seat.

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