A borehole conduit radiation source positioning system

Abstract

The present application provides a kind of inner hole pipeline radiation source positioning system, relative to prior art, by limiting component, the size of the inner diameter of pipeline can be adjusted, so that six slide columns are in sliding contact with the inner wall of pipeline, the center position of clamping assembly and radiation source device is kept, radiation source device is pushed into the inside of pipeline by advancing component, when reaching detection site, the angle of radiation source device can be rotated by connecting plate, so as to detect welding site directly, the device is more convenient to use, it is suitable for a variety of inner diameter pipeline detection use, it can be used repeatedly, inner hole pipeline radiation source positioning system can realize the rapid adjustment of horizontal position of radiation source, improve the radiation detection efficiency, reduce the radiation hazard of operator, on the other hand, radiation source can quickly reach the center position of pipe diameter and remain unchanged, which also improves the detection quality in the technical level for radiation detection.

Description

Technical Field

[0001] This invention relates to the field of nondestructive testing technology, specifically to a system for locating X-ray sources for internal pipes. Background Technology

[0002] The radiographic testing methods are clearly defined in NB / T47013.2-2015 "Non-destructive Testing of Pressure Equipment Part 2: Radiographic Testing". According to the relationship between the X-ray source, the workpiece, and the film, the radiographic methods are divided into five types: longitudinal seam radiographic method, circumferential seam external radiographic method, circumferential seam internal radiographic method, double-wall single-image method, and double-wall double-image method. Among them, the circumferential seam internal radiographic method is further divided into the circumferential seam internal radiographic small eccentric method, the central radiographic method, and the circumferential seam internal radiographic large eccentric method. At present, some equipment in the market uses unique internal hole welding technology for water inlet and outlet pipes. Due to the special nature of its welding process and weld position, conventional X-ray machines cannot be used to perform radiographic testing on the weld. Instead, a micro-focus source can be used to perform circumferential exposure inside the pipe.

[0003] When the X-ray source is rapidly delivered to the pipeline inspection area, positional deviations can easily occur. If the X-ray source is not centered within the pipe, it will affect the imaging quality of the X-ray film. Existing technologies, such as patent CN210800447U, propose an X-ray source positioning device for centrally illuminating the circumferential weld of a pipeline. By setting a telescopic folding mechanism on the base body, the position of the X-ray source device on the fixed seat can be raised or lowered. The telescopic folding mechanism is used for initial adjustment to make its height basically consistent with the center height of the workpiece. In addition, by raising or lowering the movable frame, the refraction angle of the X-ray source can be finely adjusted to ensure that the X-ray source for centrally illuminating the circumferential weld of the pipeline is aligned with the center of the workpiece.

[0004] In the aforementioned technologies, since the pipe diameters that need to be inspected daily vary, and in the absence of limiting measures for the pipe's inner diameter, a certain positional offset will occur when the X-ray source is delivered into the pipe, thus affecting the accuracy of the inspection results. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide an internal pipe X-ray source positioning system to solve the problems mentioned in the background. The invention features a novel structure; the limiting component allows adjustment based on the pipe's inner diameter, enabling six sliding columns to slide in contact with the pipe's inner wall, maintaining the center position of the clamping component and the X-ray source device. The pushing component pushes the X-ray source device into the pipe. Upon reaching the inspection area, the angle of the X-ray source device can be rotated via a connecting plate to directly inspect the welded area. The device is more convenient to use, suitable for inspecting pipes of various inner diameters, and can be used repeatedly.

[0006] To achieve the above objectives, the present invention provides the following technical solution: an internal pipe X-ray source positioning system, comprising an installation tube, a clamping assembly at the top of the installation tube, the clamping assembly including a clamping frame, two clamping frames symmetrically arranged inside the upper end of the installation tube, an X-ray source device clamped and installed inside the two clamping frames, a vertical plate fixed to the back of the clamping frame, a bidirectional screw rotatably mounted at the bottom of the installation tube via a bearing seat, and the bottom of the vertical plate engaging with the bidirectional screw, a limiting assembly surrounding the installation tube, the limiting assembly including sliding columns, six sliding columns symmetrically arranged at the center of the outer periphery of the installation tube, and a pushing assembly at the bottom of the installation tube, the pushing assembly being fixed to the bottom of the installation tube and being drively connected to the clamping assembly.

[0007] Furthermore, the limiting component also includes a threaded layer. The outer surface of the mounting tube is provided with a threaded layer, and a threaded ring is engaged on the surface of the threaded layer. A connecting ring is rotatably mounted on the top of the threaded ring via a bearing. A first connecting rod is rotatably mounted on the outer end of the connecting ring at the position corresponding to the six sliding pillars via a rotating shaft. A second connecting rod is rotatably connected on the top of the mounting tube at the position corresponding to the six sliding pillars via a rotating shaft. The other end of the second connecting rod is rotatably connected to the back of the sliding pillar via a rotating shaft. A connecting frame is mounted on the surface of the second connecting rod, and the other end of the first connecting rod is rotatably connected to the connecting frame via a rotating shaft.

[0008] Furthermore, the propulsion assembly includes a bottom ring, on which two telescopic rods are symmetrically fixed, and the extended ends of the telescopic rods are fixedly connected to the bottom of the mounting tube.

[0009] Furthermore, the bottom ring is provided with connecting plates on both sides perpendicular to the telescopic rod, and a plug is slidably inserted into the top of the connecting plate. The plug can slide through the vertical plate, and a stud is fixed at one end of the plug, and a nut is engaged with the stud on the surface of the connecting plate.

[0010] Furthermore, a sliding frame is slidably sleeved on the surface of the telescopic rod, and a second rotating ring is slidably inserted inside the sliding frame, and the connecting plate is fixed to the second rotating ring.

[0011] Furthermore, a first rotating ring is rotatably mounted on the inner wall of the mounting tube corresponding to the clamping frame via a bearing, and the first rotating ring is fixed to the vertical plate.

[0012] Furthermore, a threading hole is provided at the bottom of the bottom ring.

[0013] Furthermore, the radiation source positioning system also includes a radiation guide wire and a source storage device, wherein the radiation guide wire passes through a through hole and is connected to the radiation source device and the source storage device.

[0014] The beneficial effects of the present invention: The present invention provides an internal pipe X-ray source positioning system, comprising an installation pipe; a clamping assembly; a first rotating ring; a clamping frame; a vertical plate; a bidirectional screw; an X-ray source device; a limiting assembly; a sliding column; a threaded ring; a connecting ring; a threaded layer; a first connecting rod; a second connecting rod; a connecting frame; a pushing assembly; a connecting plate; an insert rod; a stud; a nut; a telescopic rod; a bottom ring; a sliding frame; a second rotating ring; and a wire hole.

[0015] 1. In this invention, the second rotating ring rotates along the sliding frame, and the connecting plate drives the clamping assembly and the radiation source device to rotate along the front end of the mounting tube under the action of the first rotating ring, thereby adjusting the direction and angle of the radiation.

[0016] 2. The present invention locks the position of the insertion rod with nuts and studs, maintaining the connection between the connecting plate and the vertical plate. Thus, when the connecting plate is pushed, it can drive the installation tube and the radiation source device to move.

[0017] 3. The present invention changes the distance between the sliding column and the installation pipe through the cooperation of the first connecting rod, the connecting frame and the second connecting rod, thereby making it suitable for limiting pipes with different inner diameters and maintaining the center position of the radiation source device.

[0018] 4. Compared with the prior art, this invention allows for adjustment of the pipe's inner diameter via a limiting component, enabling six sliding columns to slide in contact with the pipe's inner wall, maintaining the center position of the clamping component and the X-ray source device. The X-ray source device is pushed into the pipe via a pushing component. Upon reaching the inspection area, the angle of the X-ray source device can be rotated via a connecting plate to ensure direct alignment with the welded area for inspection. The device is more convenient to use, suitable for inspecting pipes of various inner diameters, and can be used repeatedly. The internal pipe X-ray source positioning system allows for rapid adjustment of the X-ray source's horizontal orientation, improving X-ray inspection efficiency and reducing radiation hazards to operators. Furthermore, the X-ray source can quickly reach and remain at the center position of the pipe diameter, improving the technical quality of X-ray inspection. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of an internal pipe X-ray source positioning system according to the present invention;

[0020] Figure 2 This is a schematic diagram of the clamping component structure of an internal pipe X-ray source positioning system according to the present invention;

[0021] Figure 3 This is a schematic diagram of the limiting component structure of an internal pipe X-ray source positioning system according to the present invention;

[0022] Figure 4 This is one of the schematic diagrams of the propulsion component structure of an internal pipe X-ray source positioning system according to the present invention;

[0023] Figure 5 This is the second schematic diagram of the propulsion component structure of an internal bore pipe X-ray source positioning system according to the present invention.

[0024] In the diagram: 1. Mounting tube; 2. Clamping assembly; 21. First rotating ring; 22. Clamping frame; 23. Vertical plate; 24. Bidirectional screw; 3. X-ray source device; 4. Limiting assembly; 41. Sliding column; 42. Threaded ring; 43. Connecting ring; 44. Threaded layer; 45. First connecting rod; 46. Second connecting rod; 47. Connecting frame; 5. Pushing assembly; 51. Connecting plate; 52. Insert rod; 53. Stud; 54. Nut; 55. Telescopic rod; 56. Bottom ring; 57. Sliding frame; 58. Second rotating ring; 59. Wire hole. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0026] Please see Figures 1 to 5 This invention provides a technical solution: an internal pipe X-ray source positioning system, including an installation pipe 1. The top of the installation pipe 1 is provided with a clamping assembly 2, which includes a clamping frame 22. Two clamping frames 22 are symmetrically arranged inside the upper end of the installation pipe 1, and an X-ray source device 3 is clamped and installed inside the two clamping frames 22. A vertical plate 23 is fixed to the back of the clamping frame 22. A bidirectional screw 24 is rotatably mounted on the bottom of the installation pipe 1 via a bearing seat, and the bottom of the vertical plate 23 is engaged with the bidirectional screw 24. A limiting assembly 4 is provided around the periphery of the installation pipe 1, which includes a sliding column 41. Six symmetrically arranged columns are located around the periphery of the installation pipe 1. The sliding column 41 has a pusher assembly 5 at the bottom of the mounting tube 1. The pusher assembly 5 is fixed to the bottom of the mounting tube 1 and is connected to the clamping assembly 2. When using the device, the X-ray source device 3 is installed inside the clamping frame 22. By rotating the bidirectional screw 24, the two clamping frames 22 clamp and fix the X-ray source device 3. According to the inner diameter of the pipe to be tested, the limiting assembly 4 is adjusted so that the sliding column 41 slides in contact with the inner wall of the pipe. The X-ray source device 3 is pushed into the pipe through the pusher assembly 5 to inspect the welded parts (the nylon tooling used in the mounting tube 1 will not scratch the inner wall of the pipe and also ensures uniform circumferential exposure, improving the inspection quality).

[0027] In this embodiment, the limiting component 4 further includes a threaded layer 44. The outer surface of the mounting tube 1 is provided with a threaded layer 44, and a threaded ring 42 is engaged on the surface of the threaded layer 44. A connecting ring 43 is rotatably mounted on the top of the threaded ring 42 via a bearing. A first connecting rod 45 is rotatably mounted on the outer end of the connecting ring 43 at the position corresponding to the six sliding columns 41 via a rotating shaft. A second connecting rod 46 is rotatably connected on the top of the mounting tube 1 at the position corresponding to the six sliding columns 41 via a rotating shaft. The other end of the second connecting rod 46 is rotatably connected to the back of the sliding column 41 via a rotating shaft. A connecting frame 47 is mounted on the surface of the second connecting rod 46, and the other end of the first connecting rod 45 is rotatably connected to the connecting frame 47 via a rotating shaft. When the threaded ring 42 is rotated and engaged with the threaded layer 44 on the surface of the mounting tube 1, the threaded ring 42 moves up and down. Under the cooperative action of the first connecting rod 45, the connecting frame 47, and the second connecting rod 46, the distance between the sliding column 41 and the mounting tube 1 is changed, thereby making it suitable for limiting pipes with different inner diameters and maintaining the center position of the X-ray source device 3.

[0028] In this embodiment, the propulsion assembly 5 includes a bottom ring 56. Two telescopic rods 55 are symmetrically fixed on the surface of the bottom ring 56, and the extended ends of the telescopic rods 55 are fixedly connected to the bottom of the mounting tube 1. The bottom ring 56 is provided with connecting plates 51 on both sides perpendicular to the telescopic rods 55, and a rod 52 is slidably inserted into the top of the connecting plate 51. The rod 52 can slide through the vertical plate 23. A stud 53 is fixed to one end of the rod 52, and a nut 54 is engaged with the stud 53 on the surface of the connecting plate 51. The connecting plate 51 passes through the vertical plate 23 through the rod 52. The position of the rod 52 is locked by the nut 54 and the stud 53 to maintain the connection between the connecting plate 51 and the vertical plate 23. Therefore, when the connecting plate 51 is pushed, it can drive the movement of the mounting tube 1 and the radiation source device 3.

[0029] In this embodiment, a sliding frame 57 is slidably sleeved on the surface of the telescopic rod 55, and a second rotating ring 58 is slidably inserted inside the sliding frame 57. The connecting plate 51 is fixed to the second rotating ring 58. A first rotating ring 21 is rotatably installed on the inner wall of the mounting tube 1 corresponding to the clamping frame 22 via a bearing, and the first rotating ring 21 is fixed to the vertical plate 23. By sliding the sliding frame 57 along the surface of the telescopic rod 55, the connecting plate 51 pushes the mounting tube 1 and the X-ray source device 3 to slide along the inside of the pipe, and the telescopic rod 55 extends until it moves to a position where it cannot be pushed further (the bend in the pipe welding). By rotating the second rotating ring 58 along the sliding frame 57, the connecting plate 51 drives the clamping assembly 2 and the X-ray source device 3 to rotate along the front end of the mounting tube 1 under the action of the first rotating ring 21, thereby adjusting the direction and angle of the X-ray.

[0030] In this embodiment, the bottom ring 56 has a threading hole 59 at the bottom. The radiation source positioning system also includes a radiation guide and a source storage device. The radiation guide passes through the threading hole 59 and is connected to the radiation source device 3 and the source storage device. The use of the radiation source device 3 in conjunction with the radiation guide and the source storage device is a conventional radiation detection and inspection technology.

[0031] When using the device, the X-ray source device 3 is installed inside the clamping frame 22. The two clamping frames 22 clamp and fix the X-ray source device 3 by rotating the bidirectional screw 24. The rotating threaded ring 42 engages with the threaded layer 44 on the surface of the mounting pipe 1, causing the threaded ring 42 to move up and down. Through the cooperation of the first connecting rod 45, the connecting frame 47, and the second connecting rod 46, the distance between the sliding column 41 and the mounting pipe 1 is changed, thus adapting to the use of pipes with different inner diameters for positioning. To maintain the center position of the X-ray source device 3, the sliding frame 57 slides along the surface of the telescopic rod 55, and the connecting plate 51... The mounting tube 1 and the X-ray source device 3 are pushed to slide along the inside of the pipe, and the telescopic rod 55 extends until it moves to a position where it can no longer be pushed forward. Through the rotation of the second rotating ring 58 along the sliding frame 57, the connecting plate 51 drives the clamping assembly 2 and the X-ray source device 3 to rotate along the front end of the mounting tube 1 under the action of the first rotating ring 21, adjusting the direction and angle of the X-ray, quickly delivering the X-ray source to the detection site, and keeping it in the center position inside the tube. This solves the problem of poor positioning of the X-ray source inside the tube due to lack of support, and provides strong support for improving the efficiency of X-ray detection and the imaging quality of X-ray film.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A positioning system for an internal borehole pipe X-ray source, comprising an installation pipe (1), characterized in that: The top of the mounting tube (1) is provided with a clamping assembly (2), and the clamping assembly (2) includes a clamping frame (22). Two clamping frames (22) are symmetrically arranged inside the upper end of the mounting tube (1). A radiation source device (3) is clamped and installed inside the two clamping frames (22). A vertical plate (23) is fixed to the back of the clamping frame (22). A first rotating ring (21) is rotatably installed on the inner wall of the mounting tube (1) corresponding to the clamping frame (22) through a bearing, and the first rotating ring (21) is fixed to the vertical plate (23). The bottom of the mounting tube (1) is rotatably mounted with a bidirectional screw (24) via a bearing seat, and the bottom of the vertical plate (23) is engaged with the bidirectional screw (24). The periphery of the mounting tube (1) is provided with a limiting component (4), which includes a sliding column (41). Six sliding columns (41) are symmetrically arranged around the periphery of the mounting tube (1). The bottom of the mounting tube (1) is provided with a pushing component (5), which is fixed to the bottom of the mounting tube (1) and is connected to the clamping component (2) in a transmission manner. The limiting component (4) further includes a threaded layer (44). The outer surface of the mounting tube (1) is provided with a threaded layer (44), and a threaded ring (42) is meshed on the surface of the threaded layer (44). A connecting ring (43) is rotatably mounted on the top of the threaded ring (42) through a bearing. A first connecting rod (45) is rotatably mounted on the outer end of the connecting ring (43) corresponding to the position of the six sliding columns (41) through a rotating shaft. A second connecting rod (46) is rotatably connected on the top of the mounting tube (1) corresponding to the position of the six sliding columns (41) through a rotating shaft. The other end of the second connecting rod (46) is rotatably connected to the back of the sliding column (41) through a rotating shaft. A connecting frame (47) is mounted on the surface of the second connecting rod (46), and the other end of the first connecting rod (45) is rotatably connected to the connecting frame (47) through a rotating shaft. The propulsion assembly (5) includes a bottom ring (56), on which two telescopic rods (55) are symmetrically fixed, and the extended ends of the telescopic rods (55) are fixedly connected to the bottom of the mounting tube (1); the bottom ring (56) is provided with connecting plates (51) on both sides perpendicular to the telescopic rods (55), and a plug rod (52) is slidably inserted into the top of the connecting plate (51), and the plug rod (52) can slide through the vertical plate (23); a sliding frame (57) is slidably sleeved on the surface of the telescopic rod (55), and a second rotating ring (58) is slidably inserted into the sliding frame (57), and the connecting plate (51) is fixed to the second rotating ring (58).

2. The internal pipe X-ray source positioning system according to claim 1, characterized in that: One end of the insert (52) is fixed with a stud (53), and the stud (53) is threaded through the surface of the connecting plate (51) and engaged with a nut (54).

3. The internal pipe X-ray source positioning system according to claim 1, characterized in that: The bottom ring (56) has a thread hole (59) at its bottom.

4. The internal pipe X-ray source positioning system according to claim 3, characterized in that: The radiation source positioning system also includes a radiation conductor and a source storage device. The radiation conductor passes through a threading hole (59) and is connected to the radiation source device (3) and the source storage device.

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