A pipeline radiographic inspection device

Abstract

The utility model discloses a pipeline ray detection device relates to the detection field of pipeline annular weld, including two annular connecting rings, the outside installation of a connecting ring has the gear ring, the welding of fixed plate has between two connecting rings, and the installation of X -ray instrument has between two connecting rings and be located between two fixed plates, the inside installation of connecting ring has clamping mechanism, and the inner chamber of one pipeline is provided with the centering mechanism, and the ray output end of X -ray instrument is aligned in the welding seam position of two pipelines. The utility model discloses through setting up centering mechanism, and the design of centering mechanism can realize that connecting ring and with the clamping mechanism of connecting ring's connection coincide with the center of pipeline, thereby improve the on -the -spot detection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of pipeline circumferential weld inspection, specifically a pipeline radiographic inspection device. Background Technology

[0002] The core component of a pipeline radiographic inspection device is an X-ray machine. Inside, electrons released from the cathode under a high-voltage electric field bombard the rotating anode. Because the anode has a structure with a thin outer ring and a thick inner ring, the X-rays formed by the electron impact are ejected along one side, usually perpendicular to the electron movement path, thus enabling the X-rays to be output from the output end. After the X-rays come into contact with the weld, they will attenuate. Different attenuation will occur at locations with poor welding positions, thereby achieving the purpose of inspection.

[0003] In existing technologies, pipeline welding is generally carried out on-site at the construction site, and therefore the inspection site is also on the welding site. In this case, a rotating bracket is usually installed on the X-ray machine so that it can rotate around the center of the pipeline. However, in actual use, the position of the device needs to be constantly adjusted to achieve the effect of aligning with the pipeline operation, which is quite inconvenient. Utility Model Content

[0004] The purpose of this invention is to provide a pipeline X-ray inspection device in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a pipe X-ray inspection device, comprising two annular connecting rings, a toothed ring installed on the outer side of one of the connecting rings, a fixing plate welded between the two connecting rings, an X-ray instrument installed between the two connecting rings and located between the two fixing plates, a clamping mechanism installed inside the connecting rings, a centering mechanism provided in the inner cavity of one pipe, and the X-ray output end of the X-ray instrument aligned with the weld seam of the two pipes.

[0006] As a further embodiment of this utility model: the centering mechanism includes a fixed disk located at the end of a pipe, a rotating shaft is rotatably mounted at the center of the fixed disk, a rotating disk is fixedly mounted on the outer periphery of the rotating shaft, a plurality of straight grooves are opened inside the fixed disk, a plurality of arc-shaped grooves are opened inside the rotating disk, a centering rod is movably connected between the rotating disk and the inner wall of the arc-shaped grooves, and the centering rod is inserted into the inner cavity of a pipe.

[0007] As a further embodiment of this utility model: the centering mechanism further includes a plurality of connecting ears welded to the outer periphery of the fixed disk, and a limit rod is welded to the end of the connecting ears away from the fixed disk.

[0008] As a further embodiment of this utility model: the clamping mechanism includes a screw threadedly connected to the inside of the connecting ring, a handle fixedly installed at the outward end of the screw, a bracket rotatably installed at the inward end of the screw, a roller rotatably installed on the inner side of the bracket, a limiting ear welded to the outer periphery of the connecting ring and aligned with the connecting lug, and a circular hole for insertion into the limiting rod is opened inside the limiting ear.

[0009] As a further embodiment of this utility model: two adjacent brackets are connected by a connecting rod, a sliding groove is provided on the side of one bracket, the sliding groove is slidably connected to one end of the connecting rod, and the end of the connecting rod away from the sliding groove is fixedly connected to the other bracket.

[0010] As a further improvement of this utility model, a crank handle is fixedly installed at the end of the rotating shaft away from the rotating disk.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. By setting a centering mechanism, the design of the centering mechanism can make the connecting ring and the clamping mechanism connected to the connecting ring coincide with the center of the pipe, thereby improving the efficiency of on-site inspection. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the clamping mechanism of this utility model; Figure 3 This is a schematic diagram of the centering mechanism of this utility model; Figure 4 This is a schematic diagram of the innovative mechanism of this utility model from another perspective. Figure 5 This is a schematic diagram of the installation of the limiting rod of this utility model.

[0013] In the diagram: 1. Connecting ring; 2. Fixing plate; 3. Gear ring; 4. Screw; 5. Handle; 6. Bracket; 7. Roller; 8. X-ray machine; 9. Limiting ear; 10. Fixing plate; 11. Connecting ear; 12. Limiting rod; 13. Rotating plate; 14. Centering rod; 15. Straight groove; 16. Crank handle; 17. Arc groove; 18. Rotating shaft; 19. Connecting rod. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0015] Please see Figures 1-5 In this embodiment of the utility model, a pipeline X-ray inspection device includes two annular connecting rings 1, a toothed ring 3 installed on the outer side of one connecting ring 1, a fixing plate 2 welded between the two connecting rings 1, an X-ray instrument 8 installed between the two connecting rings 1 and located between the two fixing plates 2, a clamping mechanism installed inside the connecting rings 1, a centering mechanism provided in the inner cavity of one pipeline, and the X-ray output end of the X-ray instrument 8 aligned with the weld seam of the two pipelines.

[0016] In this embodiment: First, after welding the pipe outdoors, non-destructive testing of the weld seam is required. At this time, two connecting rings 1 and a clamping mechanism connected to the connecting rings 1 are first fitted onto the outside of one end of the pipe. Then, a centering mechanism is inserted into the inner opening of one end of the pipe, and the centering mechanism is rotated to clamp the inner end of the pipe cavity. At this point, the center of the centering mechanism coincides with the center of the pipe. Then, the connecting rings 1 fitted onto the outside of the pipe and the clamping mechanism connected to the connecting rings 1 are adjusted so that the connecting rings 1 are engaged with the centering mechanism. At this point, under the limiting position of the centering mechanism... The center of the connecting ring 1 coincides with the center of the pipe. Then, the two connecting rings 1 slide back and forth, so that the X-ray output end of the X-ray instrument 8 is aligned with the annular weld position of the pipe. Finally, the clamping mechanism is rotated to clamp the outer circumference of the pipe. After clamping, the centering mechanism can be removed, and a corresponding motor mounting platform is fixed on the ground. A rotary motor is installed on the motor mounting platform using a mounting bracket, and a drive gear is assembled on the output end of the rotary motor. After assembly, the drive gear meshes with the gear ring 3, so that the drive device can rotate evenly to achieve annular inspection of the weld.

[0017] Please refer to this carefully. Figure 1 , Figure 3 and Figure 4The centering mechanism includes a fixed plate 10 located at the end of a pipe. A rotating shaft 18 is rotatably mounted at the center of the fixed plate 10. A rotating plate 13 is fixedly mounted on the outer periphery of the rotating shaft 18. The fixed plate 10 has multiple straight grooves 15 inside. The rotating plate 13 has multiple arc-shaped grooves 17 inside. A centering rod 14 is movably connected between the inner wall of the rotating plate 13 and the arc-shaped groove 17. The centering rod 14 is inserted into the inner cavity of a pipe. The centering mechanism also includes multiple connecting ears 11 welded to the outer periphery of the fixed plate 10. A limit rod 12 is welded to the end of the connecting ear 11 away from the fixed plate 10. A crank handle 16 is fixedly mounted on the end of the rotating shaft 18 away from the rotating plate 13.

[0018] In this embodiment: the centering rod 14 is inserted into the opening at one end of the pipe. Then, one hand presses the connecting lug 11, which keeps the fixing plate 10 in the current position. The other hand turns the crank handle 16, which drives the rotating plate 13 to rotate. At this time, the arc groove 17 rotates accordingly. The rotating arc groove 17 squeezes one end of the centering rod 14, so that the centering rod 14 slides along the straight groove 15. At this time, multiple centering rods 14 expand outwards synchronously until they squeeze against the inner wall of the pipe, thus clamping the inner wall of the pipe. At this time, the center of the rotating plate 13 and the fixing plate 10 coincides with the center of the pipe.

[0019] Please refer to this carefully. Figure 1 and Figure 2 The clamping mechanism includes a screw 4 threaded into the inside of the connecting ring 1. A handle 5 is fixedly installed at the outward end of the screw 4, and a bracket 6 is rotatably installed at the inward end of the screw 4. A roller 7 is rotatably installed on the inner side of the bracket 6. A limiting ear 9, which is aligned with the connecting ear 11, is welded to the outer periphery of the connecting ring 1. A round hole is opened inside the limiting ear 9 to be inserted into the limiting rod 12.

[0020] In this embodiment: After the centering mechanism completes the centering operation, the position of the connecting ring 1 is adjusted. The connecting ring 1 drives the limiting ear 9 and the connecting ear 11 to align in the front-to-back direction and move along the extension direction of the pipe, so that the circular hole of the limiting ear 9 is inserted into the limiting rod 12. At this time, the center of the connecting ring 1 coincides with the center of the pipe. Finally, by rotating the handle 5, the handle 5 drives the screw 4 to rotate. At this time, the screw 4 rotates towards the center direction. The moving screw 4 drives the roller 7 to press against the outer wall of the pipe through the bracket 6 until it is fully clamped. At this time, X-ray inspection of the weld can be performed. During the inspection process, the staff should stay away from the inspection position to avoid radiation influence.

[0021] Please refer to this carefully. Figure 5 Two adjacent brackets 6 are connected by a connecting rod 19. A sliding groove is provided on the side of one bracket 6. The sliding groove is slidably connected to one end of the connecting rod 19. The end of the connecting rod 19 away from the sliding groove is fixedly connected to the other bracket 6.

[0022] In this embodiment: during the rotation of the screw 4, the bracket 6 cannot rotate due to the limitation of the connecting rod 19. Therefore, the bracket 6 can only drive the roller 7 to move along the extension direction of the screw 4.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A pipe X-ray inspection device, comprising two annular connecting rings (1), wherein a toothed ring (3) is mounted on the outer side of one of the connecting rings (1), characterized in that, A fixing plate (2) is welded between the two connecting rings (1), and an X-ray instrument (8) is installed between the two connecting rings (1) and between the two fixing plates (2). A clamping mechanism is installed inside the connecting ring (1), and a centering mechanism is provided in the inner cavity of a pipe. The X-ray output end of the X-ray instrument (8) is aligned with the weld seam of the two pipes.

2. The pipeline X-ray inspection device according to claim 1, characterized in that, The centering mechanism includes a fixed disk (10) located at the end of a pipe. A rotating shaft (18) is rotatably mounted at the center of the fixed disk (10). A rotating disk (13) is fixedly mounted on the outer periphery of the rotating shaft (18). The fixed disk (10) has multiple straight grooves (15) inside. The rotating disk (13) has multiple arc-shaped grooves (17) inside. A centering rod (14) is movably connected between the rotating disk (13) and the inner wall of the arc-shaped grooves (17). The centering rod (14) is inserted into the inner cavity of a pipe.

3. A pipeline X-ray inspection device according to claim 2, characterized in that, The centering mechanism also includes a plurality of connecting lugs (11) welded to the outer periphery of the fixed disk (10), and a limit rod (12) is welded to the end of the connecting lugs (11) away from the fixed disk (10).

4. A pipeline X-ray inspection device according to claim 3, characterized in that, The clamping mechanism includes a screw (4) threaded into the inside of the connecting ring (1), a handle (5) fixedly installed at the outward end of the screw (4), a bracket (6) rotatably installed at the inward end of the screw (4), a roller (7) rotatably installed on the inner side of the bracket (6), a limiting ear (9) welded to the outer periphery of the connecting ring (1) and aligned with the connecting ear (11), and a round hole for insertion into the limiting rod (12) is opened inside the limiting ear (9).

5. A pipeline X-ray inspection device according to claim 4, characterized in that, Two adjacent brackets (6) are connected by a connecting rod (19). A groove is provided on the side of one bracket (6). The groove is slidably connected to one end of the connecting rod (19). The end of the connecting rod (19) away from the groove is fixedly connected to the other bracket (6).

6. A pipeline X-ray inspection device according to claim 2, characterized in that, A crank handle (16) is fixedly installed at the end of the rotating shaft (18) away from the rotating disk (13).

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