Pipeline small-caliber branch pipe welding seam defect detection tool

Abstract

The utility model relates to a pipeline small-caliber branch pipe welding seam defect detection tool which comprises a first welding pipe, a second welding pipe is arranged on the right side of the first welding pipe, fixing ring blocks are fixedly installed on the surface of the first welding pipe and the surface of the second welding pipe, the diameter of an ultrasonic probe is not larger than 20 mm, and the frequency of the ultrasonic probe is 5 MHz. The ultrasonic probe is connected with the function board in a magnetic adsorption mode through the rare earth permanent magnet, and the wave guide tube is a corrugated silica gel flexible corrugated tube. According to the pipeline small-caliber branch pipe weld defect detection tool, the electric sliding rail and the like are arranged, the electric sliding rail is used for driving the sliding block to drive the support to rotate around a weld, so that spiral scanning is achieved, an electric push rod axially pushes an ultrasonic probe by 2 mm through a transverse plate and other components every time spiral scanning is conducted for a circle, and by arranging a functional assembly, the ultrasonic probe can be accurately detected. Through cooperation of the motor, the rotating disc, the angle sensor and the like, the coverage angle range of fan-shaped scanning is + / -30 degrees, and through combination of fan-shaped scanning and spiral scanning, the detection process is optimized, so that the defect detection rate is increased.

Description

Technical Field

[0001] This utility model relates to the field of pipeline weld defect detection technology, specifically to a tooling for detecting weld defects in small-diameter branch pipes. Background Technology

[0002] Pipeline weld defect detection is a crucial step in ensuring the safe operation of pipelines and is widely used in industries such as petroleum, natural gas, chemical, and power. Weld defects can lead to pipeline leaks, ruptures, and even major safety accidents. Therefore, it is essential to adopt scientific and effective detection methods.

[0003] In long-distance pipeline systems, the circumferential welds of small-diameter branch pipes below DN50, such as sewage pipes, vent pipes, and instrument connection pipes, are difficult to inspect using conventional ultrasonic testing due to their narrow space and complex structure. Statistics show that the inspection coverage rate for such welds is less than 60%, and the defect omission rate is as high as 25%, which can easily lead to safety accidents. Therefore, a defect inspection tool for small-diameter branch pipe welds is proposed to address these issues. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a defect detection tool for small-diameter branch pipe welds that improves the defect detection rate by optimizing the detection process.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tooling for detecting weld defects in small-diameter branch pipes, comprising a first welded pipe, characterized in that: a second welded pipe is provided on the right side of the first welded pipe; a fixing ring block is fixedly installed on the surface of both the first and second welded pipes; an electric slide rail is provided inside each of the two fixing ring blocks; a slider is slidably installed inside each of the two electric slide rails; a bracket is fixedly installed on the top of each of the two sliders; an mounting plate is fixedly installed on the bottom surface of the bracket; a functional component is provided inside the mounting plate; a fixing plate is provided below the mounting plate; an electric push rod is fixedly installed on the front side of the fixing plate; a horizontal plate is fixedly installed on the bottom of the electric push rod; a support rod is provided below the horizontal plate; a functional plate is fixedly installed on the bottom of the support rod; an ultrasonic probe is magnetically connected to the bottom of the functional plate; and a waveguide is provided on the bottom of the ultrasonic probe.

[0006] The functional component includes a motor, which is fixedly mounted inside the mounting plate. A turntable is fixedly mounted at the output end of the motor. A movable block is fixedly mounted at the bottom of the turntable. A movable rod is movably connected to the surface of the movable block. A sector gear is fixedly mounted on the right side of the movable rod. A double-sided rack meshes with the right side of the sector gear. A circular gear meshes with the right side of the double-sided rack. A rotating column is fixedly mounted in the middle of the circular gear. An angle sensor is fixedly mounted on the surface of the rotating column.

[0007] Furthermore, a position sensor is provided on the surface of the slider, and an opening is provided inside the movable rod, through which the movable rod is slidably connected to the movable block.

[0008] Furthermore, a stabilizing shaft is rotatably mounted inside the mounting plate, and a movable rod is fixedly mounted on the surface of the stabilizing shaft.

[0009] Furthermore, springs are fixedly installed at the top and bottom of the double-sided racks, and the other ends of the two springs are fixedly connected to the inner wall of the mounting plate. The rotating column is rotatably installed inside the mounting plate, and a fixing plate is fixedly installed at the bottom of the rotating column.

[0010] Furthermore, a mounting plate is fixedly installed at the bottom of the horizontal plate, and a universal ball is provided inside the mounting plate. A support rod is fixedly installed at the bottom of the universal ball.

[0011] Furthermore, the functional board is equipped with a quick-release structure inside, and the functional board is connected to a corrugated pipe through the quick-release structure.

[0012] Furthermore, the diameter of the ultrasonic probe is no greater than 20mm, the frequency is 5MHz, and the ultrasonic probe is magnetically connected to the functional board via a rare earth permanent magnet. The waveguide is a corrugated silicone flexible corrugated tube, and the inside of the waveguide is filled with a high-temperature coupling agent.

[0013] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0014] This small-diameter branch pipe weld defect detection fixture, equipped with an electric slide rail and slider, uses the electric slide rail to drive the slider, which in turn drives the support to rotate around the weld, thus achieving spiral scanning. Each spiral scan revolution advances the ultrasonic probe axially by 2mm via a horizontal plate and other components. Through the integration of functional components, including a motor and turntable, the ultrasonic probe and waveguide can be driven by a rotating column to perform a fan-shaped scan. An angle sensor ensures the fan-shaped scan covers an angle range of ±30°. By combining fan-shaped and spiral scans, the detection process is optimized, thereby improving the defect detection rate. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present utility model;

[0016] Figure 2 This is a front view of the present invention.

[0017] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 This is a bottom sectional view of the mounting plate of this utility model;

[0019] Figure 5 This is a schematic diagram of the mounting plate, universal ball, and support rod of this utility model;

[0020] Figure 6 This is a schematic diagram of the functional board, ultrasonic probe, and waveguide of this utility model.

[0021] In the diagram: 1. First welded pipe; 2. Second welded pipe; 3. Fixed ring block; 4. Electric slide rail; 5. Slider; 6. Bracket; 7. Mounting plate; 8. Functional component; 801. Motor; 802. Turntable; 803. Movable block; 804. Movable rod; 805. Sector gear; 806. Double-sided rack; 807. Circular gear; 808. Rotating column; 809. Angle sensor; 810. Angle controller; 9. Fixed plate; 10. Electric push rod; 11. Horizontal plate; 12. Mounting plate; 13. Universal ball; 14. Support rod; 15. Functional plate; 16. Ultrasonic probe; 17. Waveguide. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-6 In this embodiment, a first welded pipe 1 is provided, and a second welded pipe 2 is provided on the right side of the first welded pipe 1. Fixing ring blocks 3 are fixedly installed on the surfaces of both the first welded pipe 1 and the second welded pipe 2. Electric slide rails 4 are provided inside the two fixing ring blocks 3. Slider blocks 5 are slidably installed inside the two electric slide rails 4. Brackets 6 are fixedly installed on the top of the two slider blocks 5. Mounting plates 7 are fixedly installed on the bottom surface of the brackets 6. Functional components 8 are provided inside the mounting plates 7. Fixing plates 9 are provided below the mounting plates 7. Electric push rods 10 are fixedly installed on the front side of the fixing plates 9. A horizontal plate 11 is fixedly installed at the bottom of the electric push rods 10. A support rod 14 is provided below the horizontal plate 11. A functional plate 15 is fixedly installed at the bottom of the support rod 14. An ultrasonic probe 16 is magnetically connected to the bottom of the functional plate 15. A waveguide tube 17 is provided at the bottom of the ultrasonic probe 16.

[0024] Functional component 8 includes a motor 801, which is fixedly installed inside the mounting plate 7. A turntable 802 is fixedly installed at the output end of the motor 801. A movable block 803 is fixedly installed at the bottom of the turntable 802. A movable rod 804 is movably connected to the surface of the movable block 803. A sector gear 805 is fixedly installed on the right side of the movable rod 804. A double-sided rack 806 meshes with the right side of the sector gear 805. A circular gear 807 meshes with the right side of the double-sided rack 806. A rotating column 808 is fixedly installed in the middle of the circular gear 807. An angle sensor 809 is fixedly installed on the surface of the rotating column 808.

[0025] like Figure 1 and Figure 4 As shown, by setting a position sensor and a position controller, the position controller is installed on the fixed ring block 3. When the slider 5 rotates one revolution, the position sensor and the position controller work together to send a signal to the electric push rod 10, so that the electric push rod 10 is axially advanced by 2mm. By setting a movable opening, it is easy for the movable rod 804 and the movable block 803 to slide together.

[0026] like Figure 4 As shown, by setting a stabilizing shaft, the movable rod 804 can rotate stably without any positional deviation.

[0027] like Figure 4 As shown, by setting a spring, the double-sided rack 806 is assisted to move stably, absorbing the impact force and vibration generated by the double-sided rack 806 during movement, thereby improving the smoothness of the entire transmission process.

[0028] like Figure 5 As shown, by setting up the universal ball 13, mounting plate 12 and support rod 14, a universal joint structure is formed, which can deflect ±15°, thereby assisting the ultrasonic probe 16 to better inspect the weld surface.

[0029] like Figure 6 As shown, the quick-release structure is a spring-loaded buckle structure. Specifically, there are two placement slots inside the functional plate 15, and upright plates are fixedly installed inside each of the two placement slots. Insert rods are movably installed on the surface of each of the two upright plates, and springs are provided on the surface of the insert rods. Two connecting strips are installed on the top of the waveguide 17, and slots are provided inside the two connecting strips. The connection between the functional plate 15 and the waveguide 17 can be achieved by inserting the insert rods into the slots. Furthermore, the magnetic attraction design of the ultrasonic probe 16 can save installation time.

[0030] like Figure 6 As shown, the diameter of the ultrasonic probe 16 is no more than 20mm, which is smaller than the diameter of a conventional probe, and the frequency is 5MHz, balancing penetration and resolution.

[0031] When performing a sector scan, follow these steps:

[0032] 1) First, start the drive motor 801. The drive motor 801 drives the movable block 803 to perform circular motion through the turntable 802;

[0033] 2) Then, the movable block 803 drives the double-sided rack 806 to reciprocate in the vertical direction through the cooperation of the movable rod 804 and the sector gear 805;

[0034] 3) The double-sided racks 806 drive the rotating column 808 to perform a fan-shaped motion through meshing with the circular gear 807;

[0035] 4) Finally, through the cooperation of the angle controller 810 and the angle sensor 809, when the angle sensor 809 detects that the rotation angle of the rotating column 808 is close to +30°, the angle controller 810 sends a signal to the drive motor 801 to decelerate or stop, preventing the rotating column 808 from continuing to rotate in the positive direction. When the angle is close to -30°, the controller also sends a signal to the drive motor 801 to decelerate or stop, preventing the rotating column 808 from continuing to rotate in the negative direction. In this way, the ultrasonic probe 16 can be controlled to perform a sector scan within ±30°.

[0036] In summary, this small-diameter branch pipe weld defect detection fixture, by setting up an electric slide rail 4 and a slider 5, uses the electric slide rail 4 to drive the slider 5, thereby causing the support 6 to rotate around the weld, thus achieving spiral scanning. Each time the spiral scan is completed, the electric push rod 10 advances the ultrasonic probe 16 axially by 2mm through components such as the cross plate 11. By setting up the functional component 8, and through the cooperation of the motor 801 and the turntable 802, the ultrasonic probe 16 and the waveguide 17 can be driven by the rotating column 808 to perform a fan-shaped scan. Furthermore, by setting up the angle sensor 809, the fan-shaped scan coverage angle range is ±30°. By combining fan-shaped scanning and spiral scanning, the detection process is optimized, thereby improving the defect detection rate.

[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0038] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tooling for detecting defects in weld seams of small-diameter branch pipes, comprising a first welded pipe (1), characterized in that: A second welded pipe (2) is provided on the right side of the first welded pipe (1). Fixing ring blocks (3) are fixedly installed on the surfaces of both the first welded pipe (1) and the second welded pipe (2). Electric slide rails (4) are provided inside each of the two fixing ring blocks (3). Sliding sliders (5) are slidably installed inside each of the two electric slide rails (4). Supports (6) are fixedly installed on the tops of each of the two sliding sliders (5). A mounting plate (7) is fixedly installed on the bottom surface of the support (6). An active power supply is provided inside the mounting plate (7). The component (8) has a fixing plate (9) below the mounting plate (7), an electric push rod (10) is fixedly installed on the front side of the fixing plate (9), a horizontal plate (11) is fixedly installed at the bottom of the electric push rod (10), a support rod (14) is provided below the horizontal plate (11), a functional plate (15) is fixedly installed at the bottom of the support rod (14), an ultrasonic probe (16) is magnetically connected to the bottom of the functional plate (15), and a waveguide (17) is provided at the bottom of the ultrasonic probe (16). The functional component (8) includes a motor (801), which is fixedly installed inside the mounting plate (7). A turntable (802) is fixedly installed at the output end of the motor (801). A movable block (803) is fixedly installed at the bottom of the turntable (802). A movable rod (804) is movably connected to the surface of the movable block (803). A sector gear (805) is fixedly installed on the right side of the movable rod (804). A double-sided rack (806) meshes with the right side of the sector gear (805). A circular gear (807) meshes with the right side of the double-sided rack (806). A rotating column (808) is fixedly installed in the middle of the circular gear (807). An angle sensor (809) and an angle controller (810) are fixedly installed on the surface of the rotating column (808).

2. The tooling for detecting defects in weld seams of small-diameter branch pipes according to claim 1, characterized in that: The surface of the slider (5) is provided with a position sensor, and the inside of the movable rod (804) is provided with a movable opening. The movable rod (804) is slidably connected to the movable block (803) through the movable opening.

3. The tooling for detecting defects in weld seams of small-diameter branch pipes according to claim 1, characterized in that: A stabilizing shaft is rotatably mounted inside the mounting plate (7), and a movable rod (804) is fixedly mounted on the surface of the stabilizing shaft.

4. The tooling for detecting defects in weld seams of small-diameter branch pipes according to claim 1, characterized in that: Springs are fixedly installed at the top and bottom of the double-sided rack (806), and the other ends of the two springs are fixedly connected to the inner wall of the mounting plate (7). The rotating column (808) is rotatably installed inside the mounting plate (7), and a fixing plate (9) is fixedly installed at the bottom of the rotating column (808).

5. The tooling for detecting defects in weld seams of small-diameter branch pipes according to claim 1, characterized in that: A mounting plate (12) is fixedly installed at the bottom of the horizontal plate (11), and a universal ball (13) is provided inside the mounting plate (12). A support rod (14) is fixedly installed at the bottom of the universal ball (13).

6. The tooling for detecting defects in weld seams of small-diameter branch pipes according to claim 1, characterized in that: The function board (15) is provided with a quick-release structure inside, and the function board (15) is connected to a corrugated pipe through the quick-release structure.

7. The tooling for detecting defects in weld seams of small-diameter branch pipes according to claim 1, characterized in that: The ultrasonic probe (16) has a diameter of no more than 20 mm and a frequency of 5 MHz. The ultrasonic probe (16) is magnetically connected to the functional board (15) through a rare earth permanent magnet. The waveguide (17) is a corrugated silicone flexible corrugated tube, and the inside of the waveguide (17) is filled with a high-temperature coupling agent.

Images