An automatic detection device for inner weld of large-diameter short pipeline for experiment

Abstract

An experimental large-diameter short-pipe weld inner shooting automatic detection device, including a workbench, an inner shooting unit, a driving unit, an imaging unit. The workbench includes a machine box, a plurality of first slide rails are arranged on the bottom of the machine box, and a plurality of second slide rails are arranged on the top surface of the machine box. The inner shooting unit is arranged inside the workbench and includes a first lifting assembly, and an X-ray machine is arranged on the upper end of the first lifting assembly. The driving unit is arranged inside the workbench and includes a rotating motor, the output end of the rotating motor is provided with a first gear, the first gear is meshed with a second gear, a placing rack is arranged on the upper end of the second gear, a lifting hole is arranged in the center of the placing rack, and a plurality of clamps are arranged on the upper end of the placing rack. The imaging unit is arranged on the upper end of the workbench and includes a sliding plate, a plurality of electric guide rails are arranged on the upper end of the sliding plate, a second lifting assembly is arranged on the sliding end of the electric guide rail, and an imaging plate is arranged on the upper end of the second lifting assembly. The utility model adopts an automatic detection mode, can shorten the detection time of the large-diameter pipe weld, and can detect the pipe with thick wall that cannot be shot outside.

Description

Technical Field

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

[0002] Large-diameter pipeline welding is ubiquitous in today's engineering fields, especially in national pipeline networks, chemical enterprises, and oil and gas transportation. The welding quality of pipelines directly affects the quality and safety of the project. 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 large-diameter (usually greater than 1 meter) pipelines. These experimental large-diameter pipelines are relatively short (1-2 meters). The inspection of large-diameter pipeline welds can be carried out using external and internal X-ray methods. For external X-ray methods, X-rays need to penetrate two layers of pipe wall, so the inspection time is relatively long, and the power and other parameters of the X-ray machine are required to be high. Especially for some pipelines with thick walls, the X-ray machine may not be able to penetrate two layers of pipe wall. Utility Model Content

[0003] To address the aforementioned shortcomings, this utility model provides an automatic internal inspection device for weld seams of large-diameter short pipes used in experiments. The internal inspection method can significantly shorten the inspection time for weld seams of large-diameter pipes, and it can also be used to inspect large-diameter pipes with thick walls that cannot be inspected by external inspection.

[0004] In order to achieve the purpose of this utility model, the following technology is proposed to be adopted: An automatic internal inspection device for large-diameter short pipe welds for experimental use, comprising: The workbench includes a chassis, with several parallel first slide rails at the bottom of the chassis and several parallel second slide rails on the top surface of the chassis. The internal imaging unit is located inside the worktable and includes a base block that slides on the upper end of the first slide rail. The upper end of the base block is provided with a first lifting component, and an X-ray machine is mounted on the upper end of the component. The drive unit, located inside the worktable, includes a vertically arranged rotary motor with a first gear at its output end, which meshes with a second gear. A placement frame is provided at its upper end, with a lifting hole at the center of the placement frame. Multiple clamps that move radially along the placement frame are arranged in a circular array at the upper end of the placement frame. The imaging unit is located on the upper part of the worktable and includes a sliding plate that is slidably fitted to the upper part of the second slide rail. The upper part of the sliding plate is provided with several parallel electric guide rails. The sliding direction of the sliding plate is perpendicular to the length direction of the second slide rail on the same horizontal plane. The sliding end of the electric guide rail is provided with a second lifting component, and the upper end of the component is provided with an imaging plate.

[0005] Furthermore, the lower end of the chassis is equipped with multiple rollers, and the worktable also includes a U-shaped groove located below the chassis, with the rollers positioned between the two vertical sections of the U-shaped groove.

[0006] Furthermore, the first lifting assembly has a tray at its upper end, and the X-ray machine is mounted on the upper end of the tray.

[0007] Furthermore, the upper end of the tray is provided with a pair of oppositely arranged inverted L-shaped plates, and a pair of semi-circular arc plates are provided between the two inverted L-shaped plates. The two ends of the semi-circular arc plates are respectively provided with protruding plates. The horizontal parts of the two inverted L-shaped plates are respectively screwed to the two semi-circular arc plates to fix the semi-circular arc plates and fix the X-ray machine vertically.

[0008] Furthermore, a base plate is provided on the inner bottom surface of the chassis, and each first slide rail is located on the upper part of the base plate. The drive unit also includes multiple base columns fixed to the upper part of the base plate. A rotary motor is fixed to one end of the outer periphery of a base column, and a rotating seat is provided on the upper end of the base column. A second gear rotates and engages with the upper end of the rotating seat.

[0009] Furthermore, the upper end of the placement rack has multiple through slots arranged in a circumferential array, the clamp slides in the through slots, the lower end of the clamp has a slider that passes through the through slots, and the upper end face of the clamp has a clamping groove for limiting the bottom end of the pipe.

[0010] The beneficial effects of this technical solution are as follows: 1. For large-diameter pipes, internal X-ray imaging can greatly shorten the inspection time of welds. For large-diameter pipes with thick walls that cannot be inspected by external X-ray imaging, X-ray imaging can also be carried out from the inside.

[0011] 2. The principle and structure of this device are relatively simple, making it easy to process and produce. The use of automatic detection can significantly save manpower. Attached Figure Description

[0012] Figure 1 An overall perspective view of an embodiment of this application is shown.

[0013] Figure 2 An embodiment of this application is shown. Figure 1 Enlarged view of part A.

[0014] Figure 3 An embodiment of this application is shown. Figure 1 Enlarged view of part B.

[0015] Figure 4 An embodiment of this application is shown. Figure 1 Enlarged view of part C.

[0016] Figure 5 A perspective view of the driving unit according to an embodiment of this application is shown. Detailed Implementation

[0017] The technical solution of this application will be further described in detail below with reference to the accompanying drawings.

[0018] like Figures 1-5 The experimental automatic internal imaging detection device for weld seams of large-diameter short pipes shown includes a worktable 1, an internal imaging unit 2, a drive unit 3, and an imaging unit 4.

[0019] The workbench 1 includes a chassis 11, with multiple rollers 12 at the lower end of the chassis 11. The workbench 1 also includes a U-shaped groove 13 located below the chassis 11. The rollers 12 are located between the two vertical sections of the U-shaped groove 13. One end of the U-shaped groove 13 is closed, and the other end is open. Outer plates 14 extend outward from the two vertical sides at the open end. A bottom plate 15 is provided on the inner bottom surface of the chassis 11. Several parallel first slide rails 16 are provided on the upper end of the bottom plate 15. Several parallel second slide rails 17 are provided on the top surface of the chassis 11.

[0020] The internal imaging unit 2 is located inside the worktable 1 and includes a base block 21 that slides on the upper end of the first slide rail 16. The upper end of the base block 21 is provided with a first lifting component 22, and the upper end of the first lifting component 22 is provided with a tray 23. The upper end of the tray 23 is equipped with an X-ray machine 7. Specifically, the upper end of the tray 23 is provided with a pair of oppositely arranged inverted L-shaped plates 24, and a pair of semi-circular arc plates 25 are provided between the two inverted L-shaped plates 24. The two ends of the semi-circular arc plates 25 are respectively provided with protruding plates. The horizontal parts of the two inverted L-shaped plates 24 are respectively screwed to the two semi-circular arc plates 25 to fix the semi-circular arc plates 25 and vertically fix the X-ray machine 7.

[0021] The drive unit 3 is located inside the workbench 1 and includes multiple base columns 31 fixed to the upper end of the base plate 15. A rotary motor 32 is vertically fixed to one end of the outer periphery of one base column 31. A first gear 33 is provided at the output end of the rotary motor 32. A rotating seat 34 is provided at the upper end of the base column 31. A second gear 35 meshes with the first gear 33 at the upper end of the rotating seat 34. Multiple support rods 36 are provided at the upper end of the second gear 35. A circular placement frame is provided at the upper end of the support rods 36. A lifting hole is opened in the center of the placement frame for the X-ray machine 7 to be lifted and lowered. Multiple through slots 37 are arranged in a circular array at the upper end of the placement frame. A clamp 38 that moves along the radial direction of the placement frame is slidably engaged in the through slots 37. A slider passing through the through slots 37 is provided at the lower end of the clamp 38. A clamping groove for limiting the bottom end of the pipe 5 is opened on the upper surface of the clamp 38.

[0022] Imaging unit 4 is located on the upper end of worktable 1 and includes a sliding plate 41 that is slidably fitted to the upper end of second slide rail 17. The upper end of sliding plate 41 is provided with several parallel electric guide rails 42. The sliding direction of electric guide rail 42 is perpendicular to the length direction of second slide rail 17 on the same horizontal plane. A second lifting component 43 is provided on the sliding end of electric guide rail 42. An imaging plate 44 is provided on one side of the upper end of second lifting component 43. Preferably, a control system is provided on the other side, which is electrically connected to rotary motor 32, so that the output shaft of rotary motor 32 rotates according to control command.

[0023] In this embodiment, both the first lifting assembly 22 and the second lifting assembly 43 are scissor lifts.

[0024] Work style: The large-diameter short pipe to be inspected is placed vertically on the placement rack. Then, the clamp 38 is adjusted to clamp the pipe. The height of the imaging plate 44 is adjusted so that the weld 6 of the pipe 5 is centered on the imaging plate 44. Then, the electric guide rail 42 is adjusted to maintain a reasonable distance between the imaging plate 44 and the weld 6 and fix it. Then, the first lifting component 22 is adjusted to raise the X-ray machine 7 from the lifting hole and make the output port of the X-ray machine 7 reach a reasonable position with the weld 6. Then, the first gear 33 drives the second gear 35 to rotate by the rotating motor 32, thereby driving the pipe to rotate for segmented inspection and imaging.

[0025] The above description is merely a preferred embodiment of this application and is 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. An automatic internal inspection device for weld seams in large-diameter short pipes used in experiments, characterized in that, include: The workbench (1) includes a chassis (11), with several parallel first slide rails (16) at the bottom of the chassis (11) and several parallel second slide rails (17) on the top surface of the chassis (11). The internal imaging unit (2) is located inside the worktable (1) and includes a base block (21) that is slidably fitted to the upper end of the first slide rail (16). The upper end of the base block (21) is provided with a first lifting component (22), and an X-ray machine (7) is mounted on its upper end. The drive unit (3) is located inside the workbench (1) and includes a vertically arranged rotary motor (32). Its output end is provided with a first gear (33), which meshes with a second gear (35). Its upper end is provided with a placement frame, and the center of the placement frame is provided with a lifting hole. The upper end of the placement frame is provided with multiple clamps (38) that move radially along the placement frame in a circular array. The imaging unit (4) is located on the upper end of the worktable (1) and includes a sliding plate (41) that is slidably fitted to the upper end of the second slide rail (17). The upper end of the sliding plate (41) is provided with several parallel electric guide rails (42), and its sliding direction is perpendicular to the length direction of the second slide rail (17) on the same horizontal plane. The sliding end of the electric guide rail (42) is provided with a second lifting component (43), and its upper end is provided with an imaging plate (44).

2. The experimental automatic detection device for large-diameter short pipe weld seams according to claim 1, characterized in that, The lower end of the chassis (11) is provided with multiple rollers (12), and the worktable (1) also includes a U-shaped groove (13) located below the chassis (11), with the rollers (12) located between the two vertical parts of the U-shaped groove (13).

3. The experimental automatic detection device for large-diameter short pipe weld seams according to claim 1, characterized in that, The first lifting assembly (22) has a tray (23) at its upper end, and the X-ray machine (7) is mounted on the upper end of the tray (23).

4. The experimental automatic detection device for large-diameter short pipe weld seams according to claim 3, characterized in that, The upper end of the tray (23) is provided with a pair of oppositely arranged inverted L-shaped plates (24), and a pair of semi-circular arc plates (25) are provided between the two inverted L-shaped plates (24). The two ends of the semi-circular arc plates (25) are respectively provided with protruding plates. The horizontal parts of the two inverted L-shaped plates (24) are respectively screwed to the two semi-circular arc plates (25) to fix the semi-circular arc plates (25) and fix the X-ray machine (7) vertically.

5. The automatic detection device for internal inspection of weld seams in large-diameter short pipes according to claim 1, characterized in that, The bottom surface of the chassis (11) is provided with a base plate (15), and each first slide rail (16) is provided on the upper end of the base plate (15). The drive unit (3) also includes multiple base columns (31) fixed on the upper end of the base plate (15). A rotary motor (32) is fixed on one end of the outer periphery of a base column (31). A rotating seat (34) is provided on the upper end of the base column (31), and a second gear (35) rotates and engages with the upper end of the rotating seat (34).

6. The automatic detection device for internal inspection of weld seams in large-diameter short pipes according to claim 1, characterized in that, The upper end of the placement rack has multiple through slots (37) arranged in a circular array. The clamp (38) slides in the through slots (37). The lower end of the clamp (38) has a slider that passes through the through slots (37). The upper end of the clamp (38) has a clamping groove for limiting the bottom end of the pipe (5).

Images