An experimental multi-aperture short-pipe girth weld automatic detection device

Abstract

An experimental multi-caliber short pipeline girth weld automatic detection device, including support drive unit, rotating clamping unit, three-dimensional movement unit. The support drive unit includes a top frame, a bottom frame, the upper end of the bottom frame is provided with a lower support part, the top frame includes two groups of top horizontal rods, each group includes a plurality of mutually parallel top horizontal rods, the output end of the stepping motor is provided with a first gear. The rotating clamping unit is arranged between the two groups of top horizontal rods, including a second gear engaged with the first gear, the lower end is rotatably connected to the lower support part, the upper end of the second gear is provided with a rotating platform, the upper end of the rotating platform is assembled with a plurality of L-shaped clamps, the L-shaped clamps can slide or be fixed along the radial direction of the rotating platform. The three-dimensional movement unit is one pair, respectively arranged on the upper end of the two groups of top horizontal rods, the upper end of one three-dimensional movement unit is assembled with an X-ray machine, and the upper end of the other three-dimensional movement unit is assembled with an imaging assembly. The utility model can automatically detect the girth weld of various caliber pipes, and saves manpower.

Description

Technical Field

[0001] This utility model relates to the field of X-ray flaw detection, and in particular to an automatic detection device for circumferential welds of multi-diameter short pipes used in experiments. Background Technology

[0002] Pipeline welding is ubiquitous in today's engineering field. The quality of pipeline welding directly affects the quality and safety of the project. For pipeline welding, especially for national pipeline networks, chemical enterprises, and oil and gas transmission pipelines, welders must possess extremely high welding skills. Before officially starting welding work, welders need to undergo welding training and examinations. Only after the pass rate at the training and examination stages reaches the prescribed standards can they be certified to work. Similarly, in some welding examinations, welding tests, and experimental material testing sites, it is also necessary to inspect the welds of multi-diameter pipelines. These weld inspections have certain commonalities, namely, a variety of diameter specifications and short overall pipeline lengths (from a few centimeters to over two hundred centimeters). If conventional equipment is used for inspection, it may require a lot of matching fixtures and tooling, and some may even be beyond the capabilities of conventional testing equipment. Utility Model Content

[0003] To address the aforementioned shortcomings, this invention provides an automatic detection device for circumferential welds of multi-diameter short pipes used in experiments. This device can automatically detect circumferential welds of pipes of various diameters, saving manpower.

[0004] In order to achieve the purpose of this utility model, the following technology is proposed to be adopted: An automatic detection device for circumferential welds of multi-diameter short pipes for experimental use, comprising: The support drive unit includes a top frame, a bottom frame, and multiple vertical rods that are fixedly connected between the top frame and the bottom frame. The bottom frame has a lower support at its upper end. The top frame includes two sets of top horizontal rods, each set including multiple top horizontal rods arranged parallel to each other. The support drive unit also includes a vertically arranged stepper drive motor with a first gear at its output end. The rotating clamping unit is located between two sets of top crossbars and includes a second gear meshing with the first gear. Its lower end is rotatably engaged with the lower support. The upper end of the second gear is provided with a rotating platform. Multiple L-shaped clamps are mounted on the upper end of the rotating platform. One end of the vertical part of the L-shaped clamp is used to contact the pipe to be tested during the test. The L-shaped clamp can slide or be fixed along the radial direction of the rotating platform. A pair of three-dimensional moving units are respectively located on the upper ends of two sets of top crossbars. One three-dimensional moving unit is equipped with an X-ray machine on its upper end, and the other three-dimensional moving unit is equipped with an imaging component on its upper end.

[0005] Furthermore, the base frame is provided with multiple base rods, and a base platform is provided at the upper end of the base rod, with the lower support located at the upper end of the base platform.

[0006] Furthermore, at least one of the top crossbars in each group has a through groove at both ends, and one side of the top crossbar has an opening that is connected to the through groove.

[0007] Furthermore, the stepper drive motor is located at the lower end of a top crossbar.

[0008] Furthermore, the upper surface of the rotating platform has multiple top grooves arranged in a circular array. Each L-shaped clamp is located above the top groove. The horizontal part of the L-shaped clamp has several vertical through holes, and clamping bolts are installed in the vertical through holes to fix the L-shaped clamp on the rotating platform by screwing the vertical through holes and the top grooves.

[0009] Furthermore, the imaging assembly includes a pair of clamping members, with a mounting plate between the clamping members. The mounting plate has a control system and an imaging plate at its two ends respectively. During detection, the imaging plate is used to receive X-rays emitted from the X-ray machine's output port.

[0010] Furthermore, the three-dimensional moving unit includes a sliding plate that slides along the length of the top crossbar. The lower end of the sliding plate is provided with multiple first hanging rods and multiple second hanging rods. The lower end of the first hanging rod is provided with an inverted U-shaped frame. A first wheel axle is passed through the two vertical parts of the inverted U-shaped frame. An upper roller is sleeved on the outer periphery of the first wheel axle. A second wheel axle is provided on one side of the lower end of the second hanging rod. A lower roller is sleeved on the outer periphery of the second wheel axle. The upper roller is located on the upper end face of the top crossbar. The second wheel axle passes through the opening on the side of the top crossbar. The lower roller is located in the slide groove. The upper end face of the sliding plate is provided with several slide rails. The slider of the slide rail is provided with a lifting mechanism.

[0011] The beneficial effects of this technical solution are as follows: 1. The device has a simple structure and is easy to assemble. After the pipe is clamped, it can achieve automatic detection, saving manpower.

[0012] 2. It can detect a wide variety of pipe diameters without requiring any additional tooling or external facilities and equipment, and it is especially advantageous for experimental weld inspection of small-diameter short pipes. Attached Figure Description

[0013] Figure 1 An overall perspective view of an embodiment of this application is shown.

[0014] Figure 2 A perspective view of a single three-dimensional moving unit according to an embodiment of this application is shown.

[0015] Figure 3 A partial perspective view of a three-dimensional moving unit according to an embodiment of this application is shown. Detailed Implementation

[0016] The present application will be further described below with reference to the accompanying drawings and embodiments.

[0017] like Figures 1-3The experimental automatic detection device for circumferential welds of multi-diameter short pipes shown includes a support drive unit 1, a rotary clamping unit 2, and a pair of three-dimensional moving units 3.

[0018] The support drive unit 1 includes a top frame, a bottom frame, and multiple vertical rods that are fixedly connected between the top frame and the bottom frame. The bottom frame is provided with multiple bottom rods 11, and a base platform 12 is provided at the upper end of the bottom rod 11. A lower support 13 is provided at the upper end of the base platform 12. The top frame includes two sets of top horizontal rods 14. Each set includes multiple top horizontal rods 14 arranged in parallel with each other. At least one top horizontal rod 14 in each set has a sliding groove 15 that runs through both ends. One side of the top horizontal rod 14 has an opening that runs through the sliding groove 15. A stepper drive motor 16 is vertically provided at the lower end of one top horizontal rod 14, and a first gear 17 is provided at its output end.

[0019] The rotating clamping unit 2 is located between two sets of top crossbars 14, including a second gear 21 meshing with the first gear 17. The lower end of the second gear 21 is rotatably engaged with the lower support 13. The upper end of the second gear 21 is provided with a rotating platform 22. The upper surface of the rotating platform 22 has multiple top grooves 23 arranged in a circular array. The upper end of the rotating platform 22 is equipped with multiple L-shaped clamps 24 located above the top grooves 23. One end of the vertical part of the L-shaped clamp 24 is used to contact the pipe to be tested during testing. The horizontal part of the L-shaped clamp 24 has several vertical through holes. The L-shaped clamp 24 can slide or be fixed along the radial direction of the rotating platform 22. Specifically, clamping bolts 25 are installed in the vertical through holes to fix the L-shaped clamp 24 on the rotating platform 22 by screwing the vertical through holes and the top grooves 23.

[0020] Two three-dimensional moving units 3 are respectively mounted on the upper ends of two sets of top crossbars 14. One three-dimensional moving unit 3 is equipped with an X-ray machine 4, and the other three-dimensional moving unit 3 is equipped with an imaging assembly 5. The imaging assembly 5 includes a pair of clamping members, with a mounting plate 51 between the clamping members. A control system 52 and an imaging plate 53 are respectively located at both ends of the mounting plate 51. The control system 52 contains a microcontroller. During detection, the imaging plate 53 is used to receive X-rays emitted from the light outlet 41 of the X-ray machine 4. The three-dimensional moving unit 3 includes components along the top crossbar 14. A sliding plate 31 that slides along its length has multiple first hangers 32 and multiple second hangers 34 at its lower end. Each first hanger 32 has an inverted U-shaped frame at its lower end, with a first axle passing between the two vertical sections of the inverted U-shaped frame. An upper roller 33 is fitted around the outer periphery of the first axle. A second axle is located on one side of the lower end of each second hanger 34, with a lower roller 35 fitted around its outer periphery. The upper roller 33 is located on the upper surface of the top crossbar 14, the second axle passes through an opening on the side of the top crossbar 14, and the lower roller 35 is located within a groove 15. The sliding plate 31... The end face is provided with several slide rails 36, and the sliders of the slide rails 36 are provided with lifting mechanisms 37. The lifting mechanism 37 includes a base plate 370, a top plate 372, and two lifting fork assemblies disposed between the base plate 370 and the top plate 372. The lifting fork assembly includes two X-shaped members, each X-shaped member including a pair of cross-arranged and hinged pull rods 371. One end of the two pull rods 371 of one X-shaped member is respectively hinged to one end of the two pull rods 371 of the other X-shaped member through a hinge shaft. One end of the two hinge shafts of one lifting fork assembly is connected to the other... A connecting rod 373 is provided between one end of each of the two hinge shafts of the lifting fork assembly. A threaded through hole is provided on the outer periphery of the connecting rod 373. The lifting mechanism 37 also includes an adjusting rod 374 passing through the threaded through hole of the two connecting rods 373. The outer periphery of the adjusting rod 374 is also formed with threads. An adjusting block 375 is provided at one end of the adjusting rod 374. A mounting seat 376 is provided on the upper end of the top plate 372 of a three-dimensional moving unit 3. Two pads 38 are provided on the upper surface of the mounting seat 376. Several clamps 39 are fixed on the upper end of the pads 38 for clamping the X-ray machine 4.

[0021] Work style: The short pipe to be inspected is placed vertically on the rotating platform 22. Then, the L-shaped clamp 24 is adjusted to clamp the short pipe. The three-dimensional moving unit 3 is adjusted so that the X-ray machine 4, the imaging plate 53 and the annular weld of the short pipe are at appropriate distances in the vertical, horizontal and vertical, and front and back directions. Then, the stepper drive motor 16 is controlled to rotate by the control system 52, which drives the rotating platform 22 to rotate at an appropriate angle through the second gear 21, so that the weld to be inspected is rotated at an appropriate angle. Then, the control system 52 controls the imaging plate 53 to image the weld under the X-ray penetration of the X-ray machine 4. After the first image is completed, the control system 52 continues to control the stepper drive motor 16 to rotate, so that the annular weld of the short pipe rotates to the position of the next segment of imaging and continues imaging. This cycle is repeated until the imaging of the entire annular weld of the short pipe is completed.

[0022] The above are only some of the embodiments listed in this application and are not intended to limit this application.

Claims

1. An automatic detection device for circumferential welds of multi-diameter short pipes used in experiments, characterized in that, include: The support drive unit (1) includes a top frame, a bottom frame, and multiple vertical rods that are fixedly connected between the top frame and the bottom frame. The bottom frame has a lower support (13) at its upper end. The top frame includes two sets of top horizontal rods (14), each set including multiple top horizontal rods (14) arranged in parallel with each other. The support drive unit (1) also includes a vertically arranged stepper drive motor (16), whose output end is provided with a first gear (17). The rotating clamping unit (2) is located between two sets of top crossbars (14), including a second gear (21) meshing with the first gear (17), the lower end of which is rotatably engaged with the lower support (13). The upper end of the second gear (21) is provided with a rotating platform (22), and the upper end of the rotating platform (22) is equipped with multiple L-shaped clamps (24). One end of the vertical part of the L-shaped clamp (24) is used to contact the pipe to be tested during the test. The L-shaped clamp (24) can slide or be fixed along the radial direction of the rotating platform (22). A pair of three-dimensional moving units (3) are respectively located on the upper ends of two sets of top crossbars (14). One three-dimensional moving unit (3) is equipped with an X-ray machine (4) on its upper end, and the other three-dimensional moving unit (3) is equipped with an imaging component (5) on its upper end.

2. The automatic detection device for circumferential welds of multi-diameter short pipes for experimental use according to claim 1, characterized in that, The bottom frame is provided with multiple bottom rods (11), and a bottom platform (12) is provided at the upper end of the bottom rod (11). The lower support (13) is located at the upper end of the bottom platform (12).

3. The automatic detection device for circumferential welds of multi-diameter short pipes for experimental use according to claim 1, characterized in that, Each set of top crossbars (14) has at least one top crossbar (14) with a through groove (15) at both ends, and one side of the top crossbar (14) has an opening that is connected to the groove (15).

4. The automatic detection device for circumferential welds of multi-diameter short pipes for experimental use according to claim 1, characterized in that, The stepper motor (16) is located at the lower end of a top crossbar (14).

5. The automatic detection device for circumferential welds of multi-diameter short pipes for experimental use according to claim 1, characterized in that, The upper surface of the rotating platform (22) has multiple top grooves (23) arranged in a circular array. Each L-shaped clamp (24) is located above the top groove (23). The horizontal part of the L-shaped clamp (24) has several vertical through holes. Clamping bolts (25) are installed in the vertical through holes to fix the L-shaped clamp (24) on the rotating platform (22) by screwing the vertical through holes and the top groove (23).

6. The automatic detection device for circumferential welds of multi-diameter short pipes for experimental use according to claim 1, characterized in that, The imaging assembly (5) includes a pair of clamping members, with a mounting plate (51) between the clamping members. The mounting plate (51) has a control system (52) and an imaging plate (53) at both ends. During detection, the imaging plate (53) is used to receive X-rays emitted from the light outlet (41) of the X-ray machine (4).

7. The automatic detection device for circumferential welds of multi-diameter short pipes for experimental use according to claim 3, characterized in that, The three-dimensional moving unit (3) includes a sliding plate (31) that slides along the length of the top crossbar (14). The lower end of the sliding plate (31) is provided with a plurality of first hanging rods (32) and a plurality of second hanging rods (34). The lower end of the first hanging rod (32) is provided with an inverted U-shaped frame. A first wheel axle is passed through the two vertical parts of the inverted U-shaped frame. An upper roller (33) is sleeved on the outer periphery of the first wheel axle. A second wheel axle is provided on one side of the lower end of the second hanging rod (34). A lower roller (35) is sleeved on the outer periphery of the second wheel axle. The upper roller (33) is located on the upper end face of the top crossbar (14). The second wheel axle passes through the opening on the side of the top crossbar (14). The lower roller (35) is located in the slide groove (15). The upper end face of the sliding plate (31) is provided with a plurality of slide rails (36). A lifting mechanism (37) is provided on the slider of the slide rail (36).

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