A non-destructive testing system based on digital radiography CR technology

Abstract

The application relates to the technical field of nondestructive testing, in particular to a nondestructive testing system based on digital ray CR technology, which comprises a base, the top end of the base is fixedly connected with a socket and a placing seat on the two sides, respectively, an annular slot is formed in one end of the socket, the annular slot and the placing seat are used for placing an inclined pipe and an arc-shaped pipe, a circulating detection mechanism is arranged on the outer side of the inclined pipe corresponding to the top end of the base, and a positioning and clamping mechanism and a cooling mechanism are arranged on the outer side of the placing seat corresponding to the top end of the base, respectively; the circulating detection mechanism comprises L-shaped rods fixedly connected on the two sides of the top end of the base, a special-shaped ring is fixedly connected between the two L-shaped rods, a special-shaped ring column is fixedly connected to the inner wall of the special-shaped ring, and a special-shaped groove is formed in the inner wall of the special-shaped ring column; the detection probe can move around the weld, so that the nondestructive detection operation on the weld can be continuously carried out, manual operation is not needed, and therefore the detection efficiency can be improved.

Description

Technical Field

[0001] This invention relates to the field of nondestructive testing technology, and in particular to a nondestructive testing system based on digital radiography (CR) technology. Background Technology

[0002] The tubular truss of a gymnasium is a spatial structure widely used in large-span buildings such as gymnasiums. A tubular truss is a spatial structural system composed of tubular materials such as round steel tubes, square steel tubes, or rectangular steel tubes, which are assembled by welding, bolting, etc. It can effectively bear and transfer various loads and provide a stable support frame for large-span buildings. After welding, the welds of the tubular truss need to be inspected by X-ray CR technology to avoid the presence of pores in the welds that may affect the welding quality.

[0003] Currently, existing technologies for non-destructive testing of welds on gymnasium trusses mainly target conventionally shaped welds, such as circular or square welds. However, when encountering irregularly shaped welds, due to their winding and varied paths, the truss needs to be placed horizontally during testing. A person then manually moves the X-ray inspection equipment along the weld to perform the inspection. After one side is inspected, the other side is inspected, requiring manual flipping back and forth, making continuous inspection impossible and resulting in low inspection efficiency.

[0004] Furthermore, during inspection, the internal temperature of the weld is too high after it has just been completed, and the increased fluidity of the high-temperature molten pool leads to ripples and undercuts on the weld surface. At this time, the edge effect will produce false images during radiographic inspection, resulting in inaccurate inspection results. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of the prior art by proposing a non-destructive testing system based on digital radiography (CR) technology.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a non-destructive testing system based on digital radiography (CR) technology, comprising a base, wherein a socket and a placement seat are fixedly connected to the two sides of the top of the base respectively, and an annular slot is provided at one end of the socket. The annular slot and the placement seat are used to place inclined tubes and arc-shaped tubes. A circulating detection mechanism is provided on the outer side of the top of the base corresponding to the inclined tube, and a positioning clamping mechanism and a cooling mechanism are provided on the outer side of the top of the base corresponding to the placement seat respectively.

[0007] The cyclic detection mechanism includes L-shaped rods fixedly connected to both sides of the top of the base. An irregular ring is fixedly connected between the two L-shaped rods. An irregular ring column is fixedly connected to the inner wall of the irregular ring. An irregular groove is formed on the inner wall of the irregular ring column. Limiting grooves are connected to both sides of the inner wall of the irregular groove. A limiting plate is provided on the inner wall of the limiting groove. A circular column is fixedly connected to one end of the outer side of the limiting plate. A detection probe is fixedly connected to the other end of the circular column. The detection probe moves along the weld seam trajectory between the inclined tube and the arc tube and detects the weld seam.

[0008] Preferably, the other end of the limiting plate is symmetrically connected to a motor via a tension adjustment mechanism, and each of the two motor drive ends is fixedly connected to a drive shaft. Each of the two drive shafts has a roller fixedly connected to its outer wall. The rollers roll along the inner wall of the limiting groove and move the limiting plate.

[0009] Preferably, the tension adjustment mechanism includes symmetrically arranged slide grooves at the other end of the limiting plate, with sliders slidably connected to the inner walls of both slide grooves, and the two sliders and two motors respectively fixedly connected. Electric telescopic rods are fixedly connected to one end of each of the two slide grooves, and the telescopic ends of the two electric telescopic rods and the two sliders are respectively fixedly connected.

[0010] Preferably, spherical grooves are symmetrically provided on both sides of the limiting plate, and ball bearings are provided on the inner walls of the two spherical grooves. Both sets of ball bearings are in contact with the inner walls of the limiting grooves. A gap is provided between the two drive shafts and the limiting grooves. Multiple rubber blocks are fixedly connected to the outer walls of the two rollers to increase friction.

[0011] Preferably, the positioning and clamping mechanism includes fixed plates fixedly connected to both sides of the corresponding placement seat at the top of the base, electric push rods fixedly passing through both fixed plates, limit blocks fixedly connected to the telescopic ends of both electric push rods, and arc-shaped grooves opened at one end of both limit blocks close to each other, the arc-shaped grooves being adapted to the outer wall of the arc-shaped tube.

[0012] Preferably, guide rods are fixedly connected to the lower part of the electric push rod at the opposite end of the two limiting blocks, and the two guide rods pass through the two fixed plates respectively.

[0013] Preferably, the cooling mechanism includes a movable seat slidably connected to one side of the top of the base corresponding to the placement seat, a vertical block fixedly connected to one side of the top of the base corresponding to the movable seat, a three-stage cylinder fixedly passing through the vertical block, and the telescopic end of the three-stage cylinder being fixedly connected to the movable seat.

[0014] Preferably, a vertical plate is fixedly connected to the outer side of the top of the movable seat, a hydraulic rod is fixedly passed through the vertical plate, a movable plate is fixedly connected to the telescopic end of the hydraulic rod, the movable plate and the movable seat are slidably connected, a sealing block is fixedly connected to the top of the movable plate, a nozzle is fixedly passed through the sealing block, and a cooling pipe is fixedly connected to the water inlet of the nozzle.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The cyclic detection mechanism allows the roller to rotate along the inner wall of the limiting groove, and the rubber block increases the friction to make the roller move upward while rotating. This allows the detection probe to move around the weld, enabling continuous non-destructive testing of the weld without manual operation, thus improving detection efficiency.

[0017] By setting a tension adjustment mechanism, the roller and rubber block can always be in contact with the inner wall of the limit after a period of use. This can prevent the roller and rubber block from wearing out and becoming loose, thus avoiding slippage and preventing it from affecting subsequent movement operations. Therefore, it can ensure continuous detection operations in the future.

[0018] The positioning and clamping mechanism can clamp and fix the bottom of the arc-shaped tube, preventing the arc-shaped tube and the inclined tube from tilting during the inspection process. This can prevent the weld from exceeding the detection range of the detection probe, thereby ensuring the accuracy of the inspection results.

[0019] The cooling mechanism allows cooling water to be sprayed into the arc-shaped pipe before weld inspection, and the weld is cooled through heat transfer, preventing excessive internal temperature during inspection. This prevents false results caused by edge effects and improves the accuracy of inspection results. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a nondestructive testing system based on digital radiography (CR) technology according to the present invention.

[0021] Figure 2 This is another top view of a nondestructive testing system based on digital radiography (CR) technology according to the present invention;

[0022] Figure 3 This invention relates to a nondestructive testing system based on digital radiography (CR) technology. Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 This is a structural diagram of an irregularly shaped ring in a non-destructive testing system based on digital radiography (CR) technology according to the present invention.

[0024] Figure 5 This is a vertical sectional view of an irregularly shaped ring and annular irregularly shaped column in a non-destructive testing system based on digital radiography (CR) technology according to the present invention.

[0025] Figure 6 This is a cross-sectional view of an irregularly shaped ring and annular irregularly shaped column in a non-destructive testing system based on digital radiography (CR) technology according to the present invention.

[0026] Figure 7 This is a structural diagram of a limiting plate of a non-destructive testing system based on digital radiography (CR) technology according to the present invention.

[0027] Figure 8 This is a partial structural illustration of a nondestructive testing system based on digital radiography (CR) technology according to the present invention.

[0028] In the diagram: 1. Base; 2. Socket; 3. Inclined tube; 4. Irregular ring; 5. Arc tube; 6. Sealing block; 7. Nozzle; 8. Limiting block; 9. Moving plate; 10. Placement seat; 11. Hydraulic rod; 12. Vertical plate; 13. Moving seat; 14. Vertical block; 15. Three-stage cylinder; 16. Fixing plate; 17. Guide rod; 18. Electric push rod; 19. L-shaped rod; 20. Circular column; 21. Detection probe; 22. Annular irregular column; 23. Irregular groove; 24. Limiting groove; 25. Limiting plate; 26. Motor; 27. Roller; 28. Rubber block; 29. ​​Electric telescopic rod; 30. Drive shaft; 31. Slider; 32. Slide groove; 33. Spherical groove; 34. Ball bearing; 35. Annular slot. Detailed Implementation

[0029] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0030] like Figures 1-8 The non-destructive testing system based on digital radiography (CR) technology includes a base 1. A socket 2 and a placement seat 10 are fixedly connected to both sides of the top of the base 1. One end of the socket 2 has an annular slot 35. The annular slot 35 and the placement seat 10 are used to place a slanted tube 3 and an arc-shaped tube 5. A circulating inspection mechanism is provided on the outer side of the slanted tube 3 at the top of the base 1. A positioning clamping mechanism and a cooling mechanism are provided on the outer side of the placement seat 10 at the top of the base 1. The circulating inspection mechanism can continuously inspect irregular welds, improving inspection efficiency. The positioning clamping mechanism can position and clamp the slanted tube 3 and the arc-shaped tube 5, preventing tilting during inspection. The cooling mechanism can cool the weld, preventing excessive internal temperature and ensuring accurate inspection results.

[0031] like Figure 1 , Figures 3-6 As shown, the cyclic detection mechanism includes L-shaped rods 19 fixedly connected to both sides of the top of the base 1. A shaped ring 4 is fixedly connected between the two L-shaped rods 19. An annular column 22 is fixedly connected to the inner wall of the shaped ring 4. A shaped groove 23 is opened on the inner wall of the annular column 22. Limiting grooves 24 are connected to both sides of the inner wall of the shaped groove 23. A limiting plate 25 is provided on the inner wall of the limiting groove 24. A circular column 20 is fixedly connected to one end of the outer side of the limiting plate 25. A detection probe 21 is fixedly connected to the other end of the circular column 20. The detection probe 21 moves along the weld trajectory between the inclined tube 3 and the arc tube 5 and detects the weld. The detection probe 21 is detected by digital X-ray CR technology, which is a digital X-ray detection technology based on a storage phosphor imaging plate (IP plate). It replaces the film in traditional film-based X-ray imaging with a reusable IP plate. After X-rays or gamma rays penetrate the object being inspected, the IP plate stores the radiation energy information. Then, laser scanning converts the stored energy information into a digital image, thus achieving the digitization and informatization of X-ray detection.

[0032] like Figure 6 , Figure 7 As shown, the other end of the limiting plate 25 is symmetrically connected to a motor 26 via a tension adjustment mechanism. Both motors 26 have drive shafts 30 fixedly connected to their drive ends, and rollers 27 are fixedly connected to the outer walls of both drive shafts 30. The rollers 27 roll along the inner wall of the limiting groove 24, causing the limiting plate 25 to move. By controlling the motors 26 on both sides through a synchronous controller, the drive shafts 30 on both sides can rotate in opposite directions, causing the rollers 27 to rotate in opposite directions, thus allowing the plate to travel along the inner wall of the limiting groove 24.

[0033] like Figure 7 As shown, the tension adjustment mechanism includes symmetrically arranged slide grooves 32 at the other end of the limiting plate 25. Sliding blocks 31 are slidably connected to the inner walls of both slide grooves 32. The two sliding blocks 31 are fixedly connected to two motors 26. Electric telescopic rods 29 are fixedly connected to one end of each slide groove 32, and the telescopic ends of the two electric telescopic rods 29 are fixedly connected to the two sliding blocks 31. The slide grooves 32 limit the movement of the sliding blocks 31. The synchronous controller controls the electric telescopic rods 29 on both sides to push the sliding blocks 31, thereby moving the motors 26 to both sides, ensuring tight contact between the rollers 27 and the limiting grooves 24, completing the reinforcement operation, preventing slippage during use, and preventing interference with subsequent operations.

[0034] like Figure 6 , Figure 7As shown, spherical grooves 33 are symmetrically formed on both sides of the limiting plate 25. Ball bearings 34 are arranged on the inner walls of both spherical grooves 33, and both sets of ball bearings 34 are in contact with the inner walls of the limiting grooves 24. Gaps are provided between the two drive shafts 30 and the limiting grooves 24. Multiple rubber blocks 28 are fixedly connected to the outer walls of the two rollers 27 to increase friction. The cooperation of the spherical grooves 33 and the ball bearings 34 allows for the limiting operation of the limiting plate 25, reducing resistance during movement and making the movement smoother. The multiple rubber blocks 28 increase the friction between the rollers 27 and the inner walls of the limiting grooves 24, preventing slippage during movement.

[0035] like Figure 1 , Figure 8 As shown, the positioning and clamping mechanism includes fixed plates 16 fixedly connected to both sides of the base 1 corresponding to the placement seat 10 at the top. Electric push rods 18 are fixedly threaded through both fixed plates 16. Limiting blocks 8 are fixedly connected to the telescopic ends of both electric push rods 18. Arc-shaped grooves are formed at the ends of the two limiting blocks 8 that are close to each other, adapting to the outer wall of the arc-shaped tube 5. Guide rods 17 are fixedly connected below the electric push rods 18 at the ends of the two limiting blocks 8 that are far apart from each other, respectively, and the guide rods 17 pass through the two fixed plates 16. The electric push rods 18 on both sides are controlled by a synchronous controller, pushing the limiting blocks 8 towards each other and bringing them into contact with the outer wall of the arc-shaped tube 5. Therefore, the arc-shaped tube 5 is positioned and clamped by the cooperation of the placement seat 10 and the limiting blocks 8, ensuring that the arc-shaped tube 5 and the inclined tube 3 are within the detection range, thus ensuring that the weld is within the detection range.

[0036] like Figure 1 , Figure 8As shown, the cooling mechanism includes a movable seat 13 slidably connected to the top of the base 1, corresponding to the side of the placement seat 10. A vertical block 14 is fixedly connected to the top of the base 1, corresponding to the side of the movable seat 13. A three-stage cylinder 15 is fixedly passed through the vertical block 14. The telescopic end of the three-stage cylinder 15 is fixedly connected to the movable seat 13. A vertical plate 12 is fixedly connected to the outer side of the top of the movable seat 13. A hydraulic rod 11 is fixedly passed through the vertical plate 12. A movable plate 9 is fixedly connected to the telescopic end of the hydraulic rod 11. The movable plate 9 and the movable seat 13 are slidably connected. A sealing block 6 is fixedly connected to the top of the movable plate 9. A nozzle 7 is fixedly passed through the sealing block 6. A cooling pipe is fixedly connected to the water inlet of the nozzle 7. After the arc-shaped tube 5 and the inclined tube 3 are fixed, the three-stage cylinder 15 is activated to push the moving seat 13 to move. Due to the limitation of the moving groove and the moving block, the moving seat 13 can be positioned directly in front of the placement seat 10. At this time, the hydraulic rod 11 is activated to push the moving plate 9 to move, and the sealing block 6 contacts the annular surface of the upper part of the arc-shaped tube 5. At this time, the nozzle 7 is also inside the arc-shaped tube 5. Cooling water is injected into the nozzle 7 through the cooling pipe on the nozzle 7. Therefore, the weld can be cooled through the heat transfer effect, avoiding the internal temperature of the weld from being too high. This can prevent false effects from occurring during the inspection, thus improving the accuracy of the inspection results.

[0037] Working principle: By inspecting the welds of the inclined tube 3 and the arc tube 5, the presence of pores inside the weld is avoided to prevent affecting the welding quality. Before inspection, the moving seat 13 is positioned close to the upright block 14. At this time, the inclined tube 3 is inserted into the annular slot 35, and the arc tube 5 is placed in the groove on the placement seat 10. Then, the electric push rod 18 is controlled by the synchronous controller to push the limiting block 8 towards each other. Therefore, the arc tube 5 can be positioned and clamped by the cooperation of the limiting block 8 and the placement seat 10 to prevent the inclined tube 3 and the arc tube 5 from tilting during the inspection process, thus preventing the weld from exceeding the inspection range and ensuring the accuracy of the inspection results.

[0038] Furthermore, the three-stage cylinder 15 is activated to push the movable seat 13 to move. Since the movable seat 13 and the base 1 are connected by a movable groove and a movable block, the movable block can be limited by the movable groove, thereby limiting the movable seat 13 and placing the movable seat 13 and the arc tube 5 on the same vertical plane. At this time, the hydraulic rod 11 is activated to push the movable plate 9 to move closer to the arc tube 5, and the sealing block 6 contacts the upper part of the arc tube 5 and completes the sealing. At the same time, the nozzle 7 is inserted into the arc tube 5 and cooling water is injected into the arc tube 5 through the cooling pipe on the arc tube 5. Therefore, the weld can be cooled down by the heat transfer effect, avoiding the internal temperature of the weld from being too high during the inspection, thereby preventing false effects caused by edge effects and improving the accuracy of the inspection results.

[0039] Furthermore, by controlling the motors 26 on both sides through the synchronous controller, the drive shafts 30 on both sides rotate in opposite directions, causing the rollers 27 and rubber blocks 28 to move along the inner wall of the limiting groove 24. This allows the limiting plate 25 and the circular column 20 to move, and the detection probe 21 to move along the weld seam trajectory and complete the weld seam detection. This allows for continuous weld seam detection without manual intervention, thereby improving detection efficiency. Additionally, the synchronous controller can control the electric telescopic rod 29 to push the slider 31 to both sides, ensuring that the rollers 27 and rubber blocks 28 are in close contact with the inner wall of the limiting groove 24, preventing wear and slippage during long-term use, and ensuring continuous movement thereafter.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A nondestructive testing system based on digital radiography (CR) technology, comprising a base (1), characterized in that: The top two sides of the base (1) are respectively fixedly connected to a socket (2) and a placement seat (10). One end of the socket (2) is provided with an annular slot (35). The annular slot (35) and the placement seat (10) are used to place the inclined tube (3) and the arc tube (5). The top of the base (1) is provided with a circulation detection mechanism corresponding to the outer side of the inclined tube (3). The top of the base (1) is provided with a positioning clamping mechanism and a cooling mechanism corresponding to the outer side of the placement seat (10). The cyclic detection mechanism includes L-shaped rods (19) fixedly connected to both sides of the top of the base (1), and a shaped ring (4) fixedly connected between the two L-shaped rods (19). An annular column (22) is fixedly connected to the inner wall of the shaped ring (4). A shaped groove (23) is opened on the inner wall of the annular column (22). Limiting grooves (24) are connected to both sides of the inner wall of the shaped groove (23). A limiting plate (25) is provided on the inner wall of the limiting groove (24). A circular column (20) is fixedly connected to one end of the outer side of the limiting plate (25). A detection probe (21) is fixedly connected to the other end of the circular column (20). The detection probe (21) moves along the weld trajectory between the inclined tube (3) and the arc tube (5) and detects the weld. The other end of the limiting plate (25) is symmetrically connected to a motor (26) via a tension adjustment mechanism. The driving ends of the two motors (26) are fixedly connected to a drive shaft (30). The outer walls of the two drive shafts (30) are fixedly connected to rollers (27). The rollers (27) roll along the inner wall of the limiting groove (24) and move the limiting plate (25). The tension adjustment mechanism includes symmetrically arranged slide grooves (32) on the other end of the limiting plate (25). Slider (31) is slidably connected to the inner wall of each of the two slide grooves (32). The two sliders (31) and two motors (26) are fixedly connected respectively. Electric telescopic rods (29) are fixedly connected to one end of each of the two slide grooves (32) close to each other. The telescopic ends of the two electric telescopic rods (29) and the two sliders (31) are fixedly connected respectively. The limiting plate (25) has symmetrical spherical grooves (33) on both sides. The inner walls of the two spherical grooves (33) are provided with balls (34). The two sets of balls (34) are in contact with the inner walls of the limiting grooves (24). There is a gap between the two drive shafts (30) and the limiting grooves (24). The outer walls of the two rollers (27) are fixedly connected with multiple rubber blocks (28) to increase the friction.

2. The nondestructive testing system based on digital radiography (CR) technology according to claim 1, characterized in that: The positioning and clamping mechanism includes fixed plates (16) fixedly connected to both sides of the corresponding placement seat (10) at the top of the base (1). Electric push rods (18) are fixedly inserted through both fixed plates (16). Limiting blocks (8) are fixedly connected to the telescopic ends of the two electric push rods (18). Arc-shaped grooves are opened at one end of the two limiting blocks (8) that are close to each other. The arc-shaped grooves are adapted to the outer wall of the arc-shaped tube (5).

3. The nondestructive testing system based on digital radiography (CR) technology according to claim 2, characterized in that: Each of the two limiting blocks (8) is fixedly connected to a guide rod (17) below the electric push rod (18) at one end away from each other, and the two guide rods (17) pass through the two fixing plates (16) respectively.

4. The nondestructive testing system based on digital radiography (CR) technology according to claim 1, characterized in that: The cooling mechanism includes a movable seat (13) that is slidably connected to the top of the base (1) on one side of the placement seat (10). A vertical block (14) is fixedly connected to the top of the base (1) on one side of the movable seat (13). A three-stage cylinder (15) is fixedly inserted through the vertical block (14). The telescopic end of the three-stage cylinder (15) is fixedly connected to the movable seat (13).

5. A nondestructive testing system based on digital radiography (CR) technology according to claim 4, characterized in that: A vertical plate (12) is fixedly connected to the outer side of the top of the movable seat (13). A hydraulic rod (11) is fixedly passed through the vertical plate (12). A movable plate (9) is fixedly connected to the telescopic end of the hydraulic rod (11). The movable plate (9) and the movable seat (13) are slidably connected. A sealing block (6) is fixedly connected to the top of the movable plate (9). A nozzle (7) is fixedly passed through the sealing block (6). A cooling pipe is fixedly connected to the water inlet of the nozzle (7).

Images