Auxiliary tool for visual detection of pipe fitting

Abstract

The pipe fitting visual inspection auxiliary tool comprises a bottom plate, a plurality of pairs of supporting connecting plates and a plurality of pairs of rolling wheels, and a plurality of positioning holes are formed in the bottom plate; the support connecting plates are connected with the positioning holes; each roller is rotatably arranged on the supporting connecting plate; wherein the rolling wheels are used for supporting the pipe fittings in a rolling mode, and the supporting connecting plates are selectively connected with the positioning holes so as to be matched with different pipe fittings. According to the tool, manual output can be remarkably reduced, the visual detection process of inspectors is effectively assisted, and the overall examination efficiency is remarkably improved.

Description

Technical Field

[0001] The utility model relates to the field of nuclear power, in particular to the field of examination auxiliary tooling. Background Art

[0002] During the nuclear power method test, welded test pieces, such as plates or pipes, are visually inspected. The specifications, weights, and sizes of the pipes to be inspected vary depending on the test item.

[0003] During the visual inspection test of pipe welds, inspectors need to manually flip the pipes to be inspected 360°. For inspectors participating in different test projects, one test requires rolling the pipes hundreds or even thousands of times, which is a large workload, time-consuming and labor-intensive.

[0004] In view of this, a tool for assisting the rotation of pipe fittings is needed to solve the above problems. Utility Model Content

[0005] One purpose of the utility model is to provide a pipe visual inspection auxiliary tool that can significantly reduce manual output.

[0006] To achieve the above-mentioned purpose, the auxiliary tooling for visual inspection of pipe fittings includes a base plate, multiple pairs of support connecting plates, and multiple pairs of rollers. The base plate is provided with multiple positioning holes; each support connecting plate is connected to the positioning hole; each roller is rotatably arranged on the support connecting plate; wherein, the roller is used to support the pipe fitting in a rolling manner, and the support connecting plate is optionally connected to the positioning hole to adapt to different pipe fittings.

[0007] In one or more embodiments, the supporting connecting plate has a guide groove, and the roller is rotatably connected to the supporting connecting plate via a connecting member passing through the guide groove, and the connecting member is configured to be able to move up and down along the guide groove.

[0008] In one or more embodiments, the tool further includes a rotating support assembly disposed below the base plate, so that the base plate can rotate 360° around its own vertical line as an axis.

[0009] In one or more embodiments, the rotation support assembly includes a rotation support plate and a driving assembly for driving the rotation support plate to rotate, and the rotation support plate is fixedly connected to the base plate.

[0010] In one or more embodiments, the drive assembly is a motor.

[0011] In one or more embodiments, the driving assembly includes gears, bearings, and a base, and the upper and lower parts of the rotating support plate are connected to the bottom plate and the base via bearings and gear rings, respectively.

[0012] In one or more embodiments, the supporting connecting plate is engaged with the positioning hole.

[0013] In one or more embodiments, the supporting connecting plate is fastened to the positioning hole by a nut.

[0014] In one or more embodiments, a buffer layer is provided on the surface of the roller.

[0015] In one or more embodiments, the pipe is a round pipe or a square steel pipe.

[0016] The above-mentioned pipe fitting visual inspection auxiliary tooling drives the pipe fitting to rotate 360° longitudinally through the roller, which saves time and effort and facilitates inspectors to perform visual inspection. Through the cooperation of the supporting connecting plate and different positioning holes, the pipe fitting visual inspection auxiliary tooling can be adapted to pipe fittings of different specifications. The longitudinal rolling of different pipe fittings can also be achieved by adjusting the high and low position of the roller on the supporting connecting plate. The pipe fitting can be a round tube or a square tube, thereby effectively assisting the inspector's inspection process and significantly improving the inspection efficiency. At the same time, it has a simple structure, is easy to manufacture, and has a low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and other features, properties and advantages of the present invention will become more apparent through the following description in conjunction with the accompanying drawings and embodiments, in which:

[0018] Figure 1 This is the left view of the auxiliary tooling for visual inspection of pipe fittings;

[0019] Figure 2 It is a top view of the auxiliary tooling for visual inspection of pipe fittings. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with specific embodiments and accompanying drawings. More details are set forth in the following description to facilitate a full understanding of the present invention. However, the present invention can obviously be implemented in a variety of other ways different from the description. Those skilled in the art can make similar generalizations and deductions based on actual application situations without violating the connotation of the present invention. Therefore, the scope of protection of the present invention should not be limited by the content of this specific embodiment.

[0021] It should be noted that these and other subsequent drawings are only examples and are not drawn to scale, and should not be used to limit the actual scope of protection required by the present invention. Figure 1 The up and down direction, "horizontal" refers to the direction perpendicular to Figure 1 The direction of the plane of the paper, that is, Figure 2 direction of the paper.

[0022] During the visual inspection in the nuclear power method test, after the tested personnel complete the welding of the pipe fittings, the inspector will inspect and observe the welding parts.

[0023] Each inspection involves approximately 200 pairs of 60×5″ butt-jointed pipe specimens and 100 pairs of 108×8″ butt-jointed pipe specimens. A pair of 60×5×125″ butt-jointed pipe specimens weighs approximately 2 kg, and a pair of 108×8×250″ butt-jointed pipe specimens weighs approximately 5 kg. Inspectors are expected to roll the pipes over 600 times during each inspection. After visually inspecting the weld surface, internal reinforcement must be measured. This requires rotating the pipe 90° so that the opening faces the inspector. This requires handling a total of 900 kg, which is time-consuming and labor-intensive. Currently, each visual inspection takes approximately three days, resulting in low efficiency.

[0024] Based on this problem, an auxiliary tooling for visual inspection of pipe fittings is provided, which can realize the rapid rolling of pipe fittings of various diameters, facilitate inspection by inspectors, reduce repeated rolling and lateral flipping, reduce manual output, improve the efficiency of visual inspection, and save time and effort.

[0025] like Figure 1 and Figure 2 As shown, a pipe visual inspection auxiliary tooling includes a base plate 11, a supporting connecting plate 12, and a roller 13. The base plate 11 is provided with a plurality of positioning holes 14, each supporting connecting plate 12 is connected to the positioning hole 14, and each roller 13 is rotatably arranged on the supporting connecting plate 12.

[0026] The rollers 13 are used to rollingly support the pipes (not shown in the figure), and the supporting connecting plate 12 is optionally connected to a plurality of positioning holes 14 to change the spacing between a pair of rollers 13, thereby adapting to pipes of different diameters.

[0027] Preferably, in order to avoid scratching the pipe, a buffer layer is further provided on the surface of the roller 13 .

[0028] After the supporting connecting plate 12 extends into the positioning hole 14 , it is fastened to the positioning hole 14 by a nut, or is engaged with the positioning hole 14 .

[0029] In some embodiments, the supporting connecting plate 12 has a guide groove 15, and the roller 13 is rotatably connected to the supporting connecting plate 12 through a connecting member 16 that passes through the guide groove 15. The connecting member 16 is configured to move up and down along the guide groove 15 and serve as the rotation axis of the roller 13, thereby adjusting the up and down position of the roller.

[0030] The above rollers, connecting plates, positioning holes and bottom plate structure form a mechanism for assisting the pipe fittings to roll along the longitudinal direction A. By adjusting the spacing between the two rollers and the height of the rollers themselves, longitudinal rolling of test pieces with different pipe diameters can be achieved, which can be flexibly applied to different pipe fittings.

[0031] During visual inspections of pipe welds, inspectors must observe not only the weld on the exterior but also the interior. Internal reinforcement refers to the height of the weld metal above the weld toe line on the weld surface. During this observation, the inspector's line of sight must be parallel to the pipe's axis. Therefore, the pipe's horizontal position must be adjusted so that its opening faces the inspector.

[0032] To enable the pipe specimen to roll in the transverse direction B, the fixture also includes a rotating support assembly 20 disposed beneath the base plate. This allows the base plate 11 to rotate 360° about its perpendicular axis, forming a mechanism to assist in the lateral rotation of the pipe. The rotating support assembly 20 includes a rotating support plate 21 and a drive assembly that drives the rotating support plate 21. The rotating support plate 21 is fixedly connected to the base plate 11.

[0033] In some embodiments, the driving component is a motor, and the output of the motor shaft enables the base plate 11 to rotate 360° in the horizontal plane.

[0034] In other embodiments, the drive assembly may also be an assembly with a gear structure, specifically including two gear rings, a bearing, and a base 23. The inner side of the rotating support plate 21 is provided with a gear ring, and the bearing is meshed with the gear ring to drive the rotating support plate 21 to rotate, thereby rotating the base plate 11 connected to the rotating support plate 21. The upper and lower parts of the rotating support plate 21 are connected to the base plate 11 and the base 23 via bearings and gear rings, respectively, to ensure that the entire visual inspection auxiliary tooling can rotate 360° horizontally and remain stable, enabling 360° observation of the entire weld, making it easier for inspectors to detect defects in the weld.

[0035] The following describes the use of visual inspection auxiliary tooling.

[0036] After selecting the appropriate positioning holes 14 on the support connecting plate 12, the roller is connected to the support connecting plate 12 via connectors 16. Nuts are used to secure connectors 16 to the support connecting plate 12. The support connecting plate 12 is subject to the weight of the pipe, so the positioning holes 14 and the base plate 11 must maintain a stable connection. This ensures contact between the pipe and roller 13, allowing the pipe to roll 360° longitudinally. The rotating support plate 21 is connected to the base plate 11 and base 23 at the top and bottom via bearings and gear rings, respectively.

[0037] During use, the inspector rotates the roller to make the pipe roll 360° in the longitudinal direction, so that the inspector can observe the weld on the outside of the pipe along the circumferential direction and make records; when it is necessary to record the internal residual height of the pipe, the support plate 21 is rotated to rotate the pipe on the bottom plate 11 horizontally until the opening of the pipe is aligned with the inspector, and the internal residual height of the pipe is recorded.

[0038] The above-mentioned tooling can reduce the process of repeated rolling of test pieces, facilitate visual observation by inspectors, improve the efficiency of visual inspection, and significantly improve the efficiency of visual inspection; the tooling auxiliary pipe rolling mechanism and the tooling lateral rotation mechanism are detachable, easy to carry, and simple to operate and use; the auxiliary pipe lateral rotation mechanism can achieve 360° lateral rotation, which solves the problem of manual flipping and 90° lateral rotation to observe the excess height inside the pipe.

[0039] This tool is not only suitable for observing round pipe fittings, but also for observing various types of square steel pipe fittings. Square steel pipes can also be rotated longitudinally with the help of rollers.

[0040] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0041] At the same time, this application uses specific terms to describe the embodiments of this application. For example, "one embodiment," "an embodiment," and / or "some embodiments" refer to a certain feature, structure, or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that "one embodiment," "an embodiment," or "an alternative embodiment" mentioned twice or multiple times in different locations in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application may be appropriately combined.

[0042] Although the present invention is disclosed above with reference to preferred embodiments, this is not intended to limit the present invention. Any person skilled in the art may make possible changes and modifications without departing from the spirit and scope of the present invention. Therefore, any modifications, equivalent variations, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention shall fall within the scope of protection defined by the claims of the present invention.

Claims

1. A visual inspection auxiliary tool for pipe fittings, characterized in that: include: a bottom plate, on which a plurality of positioning holes are provided; a plurality of pairs of supporting connecting plates, each supporting connecting plate being connected to the positioning hole; a plurality of pairs of rollers, each roller being rotatably disposed on the supporting connecting plate; The roller is used to support the pipe in a rolling manner, and the supporting connecting plate is selectively connected to the positioning hole to adapt to different pipes.

2. The pipe visual inspection auxiliary tool according to claim 1, characterized in that: The supporting connecting plate has a guide groove, and the roller is rotatably connected to the supporting connecting plate via a connecting piece that passes through the guide groove. The connecting piece is configured to be able to move up and down along the guide groove.

3. The pipe visual inspection auxiliary tool according to claim 1, characterized in that: The tool also includes a rotating support assembly arranged below the base plate, so that the base plate can rotate 360 ​​degrees around its own vertical line as an axis.

4. The pipe visual inspection auxiliary tool according to claim 3, characterized in that: The rotation support assembly includes a rotation support plate and a driving assembly for driving the rotation support plate to rotate. The rotation support plate is fixedly connected to the base plate.

5. The pipe visual inspection auxiliary tool according to claim 4, characterized in that: The driving component is a motor.

6. The pipe visual inspection auxiliary tool according to claim 4, characterized in that: The driving assembly includes a gear, a bearing and a base. The upper and lower parts of the rotating support plate are connected to the bottom plate and the base through bearings and gear rings respectively.

7. The pipe visual inspection auxiliary tool according to claim 1, characterized in that: The supporting connecting plate is engaged with the positioning hole.

8. The pipe visual inspection auxiliary tool according to claim 1, characterized in that: The supporting connecting plate is fastened to the positioning hole through a nut.

9. The pipe visual inspection auxiliary tool according to claim 1, characterized in that: A buffer layer is provided on the surface of the roller.

10. The pipe visual inspection auxiliary tool according to claim 1, characterized in that: The pipe fitting is a round pipe or a square steel pipe.

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