Ultrasonic weld flaw detection device

Abstract

The utility model discloses an ultrasonic weld seam flaw detection device, which relates to the technical field of ultrasonic weld seam flaw detection and comprises an outer shell, a control box and an ultrasonic detection head. A control box is connected to the interior of the outer shell, an ultrasonic detection head is arranged on one side of the outer shell, clamping frames are arranged on the two sides of the outer shell, two sliding rails are welded to the interior of the outer shell, and the two clamping frames are both in sliding connection with the sliding rails. According to the ultrasonic weld flaw detection device, an ultrasonic detection head can be limited in the middle of a steel pipe in the use process, the stability of the ultrasonic detection head in the detection process is improved, the position of the ultrasonic detection head in the steel pipe in the use process can be adjusted, and use is more convenient and faster; the ultrasonic weld seam flaw detection device solves the problem that the use stability of the probe cannot be kept in the detection process when an operator holds the probe by hand.

Description

Technical Field

[0001] The utility model relates to the technical field of ultrasonic weld flaw detection, in particular to an ultrasonic weld flaw detection device. Background Art

[0002] Ultrasonic weld flaw detection is a nondestructive testing technology that uses the propagation characteristics of ultrasound in materials to detect internal defects in welds by analyzing reflection, scattering, and other signals. Its core equipment is an ultrasonic flaw detector, which can complete the inspection without destroying the weld structure. It is suitable for quality control of key load-bearing components. It can be used to inspect welds in aircraft engine components and nuclear reactor pressure vessels to ensure structural safety in extreme environments, and to regularly inspect welds in oil and gas pipelines and storage tanks to prevent crack propagation caused by corrosive media.

[0003] Currently, ultrasonic flaw detection on pipelines is mostly performed manually. The operator holds the probe and observes the oscilloscope to detect the weld. However, this detection method cannot maintain the stability of the probe during the detection process, and the probe detection position and detection direction are prone to deviation, which in turn affects the accuracy of the weld detection results. Utility Model Content

[0004] The purpose of the utility model is to provide an ultrasonic weld flaw detection device to solve the problem raised in the above background art that the operator cannot maintain the stability of the probe when holding the probe during the detection process.

[0005] To achieve the above-mentioned purpose, the present utility model provides the following technical solutions: an ultrasonic weld flaw detection device, comprising an outer shell;

[0006] An ultrasonic detection head is provided on one side of the outer shell, and clamping frames are provided on the left and right sides of the outer shell, and two sliding rails are welded inside the outer shell. The two clamping frames are slidably connected to the two sliding rails respectively, and adjustment grooves are equidistantly provided on the opposite surfaces of the two clamping frames. An adjustment gear ring engaged with the adjustment gear groove is installed between the two clamping frames, and a driving gear engaged with the adjustment gear ring is provided on the outside of the adjustment gear ring; a driving motor that drives the driving gear is installed in the outer shell.

[0007] Preferably, one side of the drive motor is connected to the outer shell through a locking bolt, and the output end of the drive motor is connected to the drive gear through a coupling.

[0008] Preferably, the adjusting gear ring is provided with a rotatable connecting ring, and one side of the connecting ring is welded to the outer shell.

[0009] Preferably, a handle is welded to a side of the outer shell away from the ultrasonic detection head.

[0010] Preferably, the ultrasonic detection head is connected to a threaded adjustment rod, which is movable but not rotatable relative to the outer shell, and the threaded adjustment rod is threadedly connected to an internal threaded barrel, one end of which is rotatably connected to the outer shell through a bearing seat; a driven gear is installed on the internal threaded barrel, and a servo motor is fixedly installed inside the outer shell, and a driving gear is installed at the output end of the servo motor, and the driving gear is meshed with the driven gear.

[0011] Preferably, a radially penetrating reserved groove is provided inside the threaded adjustment rod, the reserved groove extends along the length direction of the threaded adjustment rod, a plug-in frame is inserted through the reserved groove, and both ends of the plug-in frame are welded to the outer shell.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the ultrasonic weld flaw detection device can limit the relative position of the ultrasonic detection head to the pipeline during use, thereby improving the stability of the ultrasonic detection head during the detection process; at the same time, the position of the ultrasonic detection head inside the steel pipe during use can also be adjusted, making it more convenient to use and solving the problem that the operator cannot maintain the stability of the probe when holding the probe during the detection process.

[0013] 1. In order to maintain the stability of the ultrasonic detection head during the detection process, when inspecting the welded parts of the steel pipe, the ultrasonic weld flaw detection device controls the output end of the drive motor through the coupling to drive the drive gear to rotate, and the drive gear is engaged with the adjustment ring gear, and the adjustment ring gear is engaged with the adjustment tooth groove, so that when the drive motor rotates, it drives the two clamping frames to move to both sides along the sliding track and unfold. At this time, the operator holds the handle and inserts the outer shell into the middle of the steel pipe. The two clamping frames are located on both sides of the steel pipe. Then, the drive motor is started again to drive the drive gear to reverse through the coupling, and the above operation process is repeated, driving the two clamping frames to move relative to each other along the sliding track to clamp the steel pipe. The ultrasonic weld flaw detection device can fix the position of the ultrasonic detection head during use, thereby improving the stability of the ultrasonic detection head during the detection process;

[0014] 2. To further facilitate the ultrasonic inspection head's inspection, the ultrasonic weld flaw detection device activates a servo motor. The servo motor's output drives the driving gear, which engages with the driven gear, thereby rotating the internally threaded barrel. The threaded adjustment rod, coupled with the internal slot and the docking bracket, moves along the length of the steel pipe. This ultrasonic weld flaw detection device allows for precise adjustment of the ultrasonic inspection head's position within the steel pipe, making it more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1This is a schematic diagram of the three-dimensional structure of the ultrasonic weld flaw detection device of the utility model;

[0016] Figure 2 This is a schematic diagram of the explosion structure of the ultrasonic weld flaw detection device of the utility model;

[0017] Figure 3 This is a schematic diagram of the three-dimensional cross-sectional structure of the outer shell of the utility model;

[0018] Figure 4 This is a schematic diagram of the three-dimensional structure of the clamping frame of the utility model;

[0019] Figure 5 This is a schematic diagram of the three-dimensional cross-sectional structure of the adjusting gear ring of the utility model;

[0020] Figure 6 It is a schematic diagram of the three-dimensional cross-sectional structure of the internal threaded barrel of the present utility model.

[0021] In the figure: 1. Outer shell; 101. Handle; 201. Ultrasonic detection head; 3. Clamping frame; 301. Adjusting tooth groove; 302. Sliding track; 303. Adjusting gear ring; 3031. Connecting ring; 304. Driving gear; 305. Driving motor; 4. Threaded adjustment rod; 401. Reserved groove; 402. Plug-in frame; 403. Internally threaded barrel; 404. Driven gear; 405. Driving gear; 406. Servo motor. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-Figure 5 , the utility model provides a technical solution: an ultrasonic weld flaw detection device, comprising an outer shell 1;

[0024] An ultrasonic detection head 201 is provided on one side of the outer shell 1, and a handle 101 is welded on the side of the outer shell 1 away from the ultrasonic detection head 201; a clamping frame 3 is provided on the left and right sides of the outer shell 1, and two sliding rails 302 are welded inside the outer shell 1, and the two clamping frames 3 are slidably connected to the two sliding rails 302 respectively, and adjustment teeth 301 are equidistantly provided on the opposite surfaces of the two clamping frames 3, and an adjustment tooth ring 303 engaged with the adjustment tooth groove 301 is installed between the two clamping frames 3, and a driving gear 304 engaged with the adjustment tooth ring 301 is provided on the outside of the adjustment tooth ring 303; a driving motor 305 for driving the driving gear 304 is installed in the outer shell 1, and the driving motor 305 is connected to the outer shell 1 by bolts; a rotatable connecting ring 303 is installed inside the adjusting tooth ring 303, and one side of the connecting ring 3031 is welded to the outer shell 1.

[0025] During specific implementation, in order to maintain the stability of the ultrasonic detection head 201 during the detection process, when the welding part of the steel pipe is detected, the driving motor 305 is controlled by the control box 2. The output end of the driving motor 305 drives the driving gear 304 to rotate through the coupling. When the driving gear 304 rotates, it engages with the adjusting tooth ring 303 that is rotatably connected to the outer side of the connecting ring 3031, driving the adjusting tooth ring 303 to rotate. The adjusting tooth ring 303 engages with the adjusting tooth grooves 301 on the two clamping frames 3, driving the two clamping frames 3 to move to both sides along the sliding track 302 and unfold. At this time, the operator holds the handle 101 and moves The outer shell 1 is plugged into the middle of the steel pipe, and the two clamping frames 3 are located on both sides of the steel pipe. Then the drive motor 305 is started again to drive the drive gear 304 to reverse through the coupling, and the above operation process is repeated to drive the two clamping frames 3 to move relative to each other along the sliding track 302, so that the two clamping frames 3 are held on the steel pipe; the steel pipe is clamped by the two clamping frames 3, so that the relative position of the ultrasonic detection head 201 and the steel pipe remains fixed. The ultrasonic weld flaw detection device can fix the position of the ultrasonic detection head 201 during use, thereby improving the stability of the ultrasonic detection head 201 during the detection process.

[0026] See Figure 2 、 Figure 4 and Figure 6As can be seen, the ultrasonic detection head 201 is connected to a threaded adjustment rod 4, which is threaded with an internally threaded barrel 403. One end of the internally threaded barrel 403 is rotatably connected to the outer shell 1 via a bearing seat. A driven gear 404 is mounted on the internally threaded barrel 403. A servo motor 406 is fixedly mounted inside the outer shell 1 via connecting bolts. The output end of the servo motor 406 is mounted with a driving gear 405, which meshes with the driven gear 404. The threaded adjustment rod 4 is provided with a radially extending reserved slot 401, which extends along the length of the threaded adjustment rod 4. A socket bracket 402 is inserted into the reserved slot 401, and both ends of the socket bracket 402 are welded to the outer shell 1.

[0027] During specific implementation, in order to further facilitate the detection work of the ultrasonic detection head 201, the servo motor 406 is started, and the output end of the servo motor 406 drives the driving gear 405 to rotate, and the driving gear 405 is engaged with the driven gear 404 on the internal threaded barrel 403, driving the driven gear 404 and the internal threaded barrel 403 to rotate, and the internal threaded barrel 403 is threadedly matched with the threaded adjustment rod 4. At this time, the threaded adjustment rod 4 will move along the length direction of the steel pipe under the plug-in action of the internal reserved groove 401 and the plug-in frame 402. The ultrasonic weld flaw detection device can adjust the position of the ultrasonic detection head 201 during use inside the steel pipe, which is more convenient to use.

[0028] In summary, when using the ultrasonic weld flaw detection device, the drive motor 305 is started, and the output end of the drive motor 305 drives the drive gear 304 to rotate. When the drive gear 304 rotates, it drives the adjusting gear ring 303 to rotate, and the adjusting gear ring 303 engages with the adjusting tooth groove 301, thereby driving the two clamping frames 3 to move to both sides along the sliding track 302 and unfold. At this time, the operator holds the handle 101 and plugs the outer shell 1 into the middle of the steel pipe. The two clamping frames 3 are located on both sides of the steel pipe. Then, the drive motor 305 is started again to drive the drive gear 304 to reverse through the coupling, and the above operation process is repeated. When the two clamping frames 3 move relative to each other along the sliding track 302 and clamp the steel pipe, the ultrasonic detection head 201 is started. The ultrasonic detection head 201 penetrates the weld through high-frequency sound waves to accurately identify the location, size and properties of defects such as pores, cracks, and lack of fusion. The content not described in detail in this description belongs to the existing technology known to professional and technical personnel in this field.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, 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. An ultrasonic weld flaw detection device, comprising an outer shell (1), characterized in that: An ultrasonic detection head (201) is provided on one side of the outer shell (1), a clamping frame (3) is provided on both the left and right sides of the outer shell (1), and two sliding rails (302) are welded inside the outer shell (1), the two clamping frames (3) are respectively slidably connected to the two sliding rails (302), and adjustment tooth grooves (301) are equidistantly provided on the opposite surfaces of the two clamping frames (3), an adjustment tooth ring (303) meshing with the adjustment tooth groove (301) is installed between the two clamping frames (3), and a driving gear (304) meshing with the adjustment tooth ring (303) is provided on the outside of the adjustment tooth ring (303); a driving motor (305) for driving the driving gear (304) is installed inside the outer shell (1).

2. The ultrasonic weld flaw detection device according to claim 1, characterized in that: One side of the drive motor (305) is connected to the outer shell (1) via a locking bolt, and the output end of the drive motor (305) is connected to the drive gear (304) via a coupling.

3. The ultrasonic weld flaw detection device according to claim 1, characterized in that: The adjusting toothed ring (303) is provided with a rotatable connecting ring (3031), and one side of the connecting ring (3031) is welded to the outer shell (1).

4. The ultrasonic weld flaw detection device according to claim 1, characterized in that: A handle (101) is welded to a side of the outer shell (1) away from the ultrasonic detection head (201).

5. The ultrasonic weld flaw detection device according to claim 1, characterized in that: The ultrasonic detection head (201) is connected to a threaded adjustment rod (4), which is movable but not rotatable relative to the outer shell (1). The threaded adjustment rod (4) is threadedly connected to an internal threaded barrel (403), and one end of the internal threaded barrel (403) is rotatably connected to the outer shell (1) via a bearing seat. A driven gear (404) is installed on the internal threaded barrel (403), and a servo motor (406) is fixedly installed inside the outer shell (1). A driving gear (405) is installed at the output end of the servo motor (406), and the driving gear (405) is meshed with the driven gear (404).

6. The ultrasonic weld flaw detection device according to claim 4, characterized in that: A radially penetrating reserved groove (401) is provided inside the threaded adjustment rod (4), the reserved groove (401) extending along the length direction of the threaded adjustment rod (4), a plug-in frame (402) is inserted through the reserved groove (401), and both ends of the plug-in frame (402) are welded to the outer shell (1).

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