Gamma-ray nondestructive flaw detection device
By designing a gamma-ray nondestructive testing device and adopting a cleaning brush and limit block structure, the problems of impurities on the pipeline surface affecting the detection accuracy and poor adaptability were solved, and efficient and stable nondestructive testing was achieved.
Patent Information
- Application Number
- CN202521357296.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-30
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2035-06-30
AI Technical Summary
In traditional gamma-ray nondestructive testing, impurities on the pipeline surface affect the detection accuracy and poor adaptability, especially when testing large pipelines, which is inefficient.
A γ-ray nondestructive testing device was designed, which includes a lead cover, a base, a turntable, a flaw detector and a cleaning brush. The cleaning brush automatically cleans the pipeline surface, and the limit blocks and fixing mechanism are used to adapt to pipelines of different sizes to ensure detection stability.
It improves detection accuracy and efficiency, adapts to various pipe sizes, and realizes non-contact, efficient and non-destructive testing.
Smart Images
Figure CN223485885U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of gamma-ray flaw detection technology, and in particular to a gamma-ray non-destructive testing device. Background Technology
[0002] Gamma-ray nondestructive testing is a technique that utilizes the attenuation characteristics of gamma rays as they penetrate an object to detect internal defects in materials. By receiving the penetrated rays through a radiographic film or detector, an image is formed to determine the location and size of the defect. It is widely used in the inspection of industrial pipelines, pressure vessels, and other components, providing a nondestructive assessment of the internal quality of structural members.
[0003] During pipeline production, defect detection is required. Inevitably, dust and other impurities will adhere to the pipeline surface during the production process. These impurities will affect the accuracy of gamma-ray flaw detection. The traditional solution is to clean the pipeline before flaw detection. This operation will affect the detection efficiency. This phenomenon is more obvious when dealing with larger pipelines. Moreover, the traditional flaw detection method has poor adaptability to pipelines of different sizes.
[0004] Based on this, a gamma-ray non-destructive testing device is proposed. Utility Model Content
[0005] The purpose of this invention is to provide a gamma-ray non-destructive testing device to solve the above-mentioned problems.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A gamma-ray nondestructive testing device includes a lead cover, a base inside the lead cover, a turntable rotatably connected above the base, a flaw detector above the base, a connecting plate connected to one side of the flaw detector, a cleaning brush connected to the connecting plate, the flaw detector being slidably connected to the base, and a fixing mechanism for fixing the pipeline to be tested connected to the turntable.
[0008] Preferably, a motor is connected to the lower end of the turntable, and the motor is connected to the lower end of the base via a fixing bracket.
[0009] Preferably, the lower end of the flaw detector is connected to a connecting strip, and a through groove is provided on the base, with the connecting strip slidably connected to the through groove.
[0010] Preferably, the connecting strip has a pin hole and a sliding groove, and a limit pin is connected to the pin hole.
[0011] Preferably, the fixing mechanism includes a deflection block, a central column is connected to the upper end of the turntable, a limiting ring is slidably sleeved on the central column, the deflection block is rotatably connected to the outside of the limiting ring, a spring is connected to the lower end of the limiting ring, and the lower end of the spring is connected to the turntable.
[0012] Preferably, one side of the deflection block is connected to a limit block via a rod, and the limit block is engaged with one end of the pipe to be inspected.
[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:
[0014] 1. This application adopts a cleaning brush structure, which enables the flaw detector to automatically clean the outer surface of the pipe during the inspection process, thereby improving the detection accuracy of the flaw detector. In addition, the cleaning brush can adjust the distance from the central column according to the pipe size, adapting to the flaw detection needs of pipes of various sizes.
[0015] 2. This application adopts a limiting block structure, which can be used to fix the pipeline. The limiting block structure is telescopic and can be adapted to fix pipelines of different sizes, thereby improving the structural stability during the pipeline rotation flaw detection process. Attached Figure Description
[0016] Figure 1 A schematic diagram of the lead shield provided according to an embodiment of the present invention is shown;
[0017] Figure 2 A schematic diagram of the internal structure of the lead shield provided according to an embodiment of the present invention is shown;
[0018] Figure 3 A schematic diagram of the structure of the fixing frame connection provided according to an embodiment of the present utility model is shown;
[0019] Figure 4 An exploded structural diagram of the connection point of the connecting strip provided according to an embodiment of the present invention is shown.
[0020] Legend:
[0021] 1. Lead cover; 2. Base; 3. Turntable; 4. Cleaning brush; 5. Connecting strip; 6. Limiting pin; 7. Center column; 8. Motor; 9. Fixing bracket; 10. Pin hole; 11. Flaw detector; 12. Connecting plate; 13. Limiting ring; 14. Spring; 15. Deflection block; 16. Limiting block; 17. Through groove; 18. Slide groove. Detailed Implementation
[0022] The following will be combined with the accompanying 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] Please see Figures 1-4 This utility model provides a technical solution:
[0024] A gamma-ray non-destructive testing device includes a lead shield 1. The lead shield 1 is an ideal material for blocking gamma rays due to its high atomic number, high density and easy processing. Its bending characteristics make it adaptable to various complex protection scenarios. A base 2 is set inside the lead shield 1. A turntable 3 is rotatably connected above the base 2. A flaw detector 11 is set above the base 2. A connecting plate 12 is connected to one side of the flaw detector 11. A cleaning brush 4 is connected to the connecting plate 12. The flaw detector 11 is slidably connected to the base 2. A fixing mechanism for fixing the pipeline to be tested is connected to the turntable 3.
[0025] Specifically, such as Figure 2 and Figure 3 As shown, a motor 8 is connected to the lower end of the turntable 3. The motor 8 is connected to the lower end of the base 2 through a fixing bracket 9. During testing, the motor 8 is a fixed structure. In actual installation, a fixing structure can be set on the outside of the motor 8 to improve the structural stability of the motor 8 when one end touches the ground.
[0026] Specifically, such as Figure 4 As shown, the flaw detector 11 is connected to a connecting strip 5 at its lower end, and a through groove 17 is provided on the base 2. The connecting strip 5 is slidably connected to the through groove 17. By adjusting the position of the connecting strip 5 in the through groove 17, the distance between the flaw detector 11 and the pipeline can be adjusted.
[0027] Specifically, such as Figure 4 As shown, the connecting strip 5 has a pin hole 10 and a slide groove 18. A limit pin 6 is connected to the pin hole 10. The position of the connecting strip 5 is limited by the limit pin 6 to prevent the connecting strip 5 from sliding in the slide groove 18 during testing.
[0028] Specifically, such as Figure 4 As shown, the fixing mechanism includes a deflection block 15, a central column 7 connected to the upper end of the turntable 3, a limiting ring 13 slidably sleeved on the central column 7, the deflection block 15 rotatably connected to the outside of the limiting ring 13, a spring 14 connected to the lower end of the limiting ring 13, and the lower end of the spring 14 connected to the turntable 3. The deflection block 15 cannot be flipped upward from the horizontal state, but can only be flipped downward. In the initial state, the deflection block 15 and the limiting block 16 connected to one end are vertically downward under the action of gravity. The reason why the deflection block 15 cannot be flipped upward from the horizontal state is that it is limited by the limiting ring 13.
[0029] Specifically, such as Figure 4 As shown, a limit block 16 is connected to one side of the deflection block 15 via a rod telescopic connection. The limit block 16 is snapped onto one end of the pipe to be inspected. The plane where the limit block 16 and the pipe are snapped together is V-shaped, and the rod connected to the limit block 16 is slidably connected to the deflection block 15.
[0030] In summary, the gamma-ray non-destructive testing device provided in this embodiment requires the pipe to be placed on the turntable 3 when gamma-ray non-destructive testing is required on the pipe, so that the pipe is sleeved outside the central column 7, and the height of the limiting ring 13 is raised. At this time, the spring 14 structure is stretched. Then, the deflection block 15 is flipped to a horizontal state, the limiting block 16 is stretched, and the limiting block 16 is snapped onto the pipe. The pipe is clamped between the turntables 3 by the spring 14 and the limiting block 16.
[0031] Remove the limiting pin 6 and adjust the position of the connecting strip 5 in the through groove 17 so that the cleaning brush 4 connected to one end of the connecting strip 5 abuts against the outside of the pipe, while the flaw detector 11 does not contact the pipe. Then, a lead cover 1 is placed on the outside of the pipe to block the γ-rays generated during the inspection. During the inspection, it is only necessary to control the motor 8 to rotate at a low speed. At this time, as the turntable 3 drives the pipe to rotate, the cleaning brush 4 can clean the outer wall of the pipe. At the same time, the flaw detector 11 can emit γ-rays that pass through the pipe. Based on the degree of absorption and attenuation of the rays at different parts, it is determined whether there are defects inside the pipe, such as cracks, pores, and incomplete penetration. This achieves non-contact non-destructive testing, improving the testing efficiency and stability.
[0032] The above description of the embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A gamma-ray non-destructive testing device, comprising a lead shield (1), characterized in that, A base (2) is provided inside the lead cover (1). A turntable (3) is rotatably connected above the base (2). A flaw detector (11) is provided above the base (2). A connecting plate (12) is connected to one side of the flaw detector (11). A cleaning brush (4) is connected to the connecting plate (12). The flaw detector (11) is slidably connected to the base (2). A fixing mechanism for fixing the pipeline to be inspected is connected to the turntable (3).
2. The gamma-ray nondestructive testing device according to claim 1, characterized in that, The turntable (3) is connected to a motor (8) at its lower end, and the motor (8) is connected to the lower end of the base (2) via a fixing frame (9).
3. The gamma-ray non-destructive testing device according to claim 1, characterized in that, The flaw detector (11) is connected to a connecting strip (5) at its lower end. A through groove (17) is provided on the base (2). The connecting strip (5) is slidably connected to the through groove (17).
4. The gamma-ray non-destructive testing device according to claim 3, characterized in that, The connecting strip (5) has a pin hole (10) and a slide groove (18), and a limit pin (6) is connected to the pin hole (10).
5. The gamma-ray non-destructive testing device according to claim 1, characterized in that, The fixing mechanism includes a deflection block (15), a central column (7) is connected to the upper end of the turntable (3), a limiting ring (13) is slidably sleeved on the central column (7), the deflection block (15) is rotatably connected to the outside of the limiting ring (13), a spring (14) is connected to the lower end of the limiting ring (13), and the lower end of the spring (14) is connected to the turntable (3).
6. The gamma-ray nondestructive testing device according to claim 5, characterized in that, The deflection block (15) is connected to a limit block (16) via a rod telescopic connection on one side, and the limit block (16) is engaged at one end of the pipeline to be inspected.